Example #1
0
        /// <summary>
        /// Gets the sendID's internal ID from the database. If the record doesn't exist
        /// then it will be created.
        /// </summary>
        /// <param name="sendID">The SendID to get the internal ID for.</param>
        /// <returns></returns>
        public static async Task <Send> CreateAndGetInternalSendIDAsync(string sendID)
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
BEGIN TRANSACTION

MERGE man_mta_send WITH (HOLDLOCK) AS target
USING (SELECT @sndID) AS source(mta_send_id)
ON (target.mta_send_id = source.mta_send_id)
WHEN NOT MATCHED THEN
	INSERT (mta_send_id, mta_sendStatus_id, mta_send_internalId, mta_send_createdTimestamp)
	VALUES (@sndID, @activeStatusID, ISNULL((SELECT MAX(mta_send_internalID) + 1 FROM man_mta_send), 1), GETUTCDATE());

COMMIT TRANSACTION

SELECT *
FROM man_mta_send WITH(nolock)
WHERE mta_send_id = @sndID";
                cmd.Parameters.AddWithValue("@sndID", sendID);
                cmd.Parameters.AddWithValue("@activeStatusID", (int)SendStatus.Active);
                return(await DataRetrieval.GetSingleObjectFromDatabaseAsync <Send>(cmd, CreateAndFillSendFromRecord).ConfigureAwait(false));
            }
        }
Example #2
0
        /// <summary>
        /// Saves the MantaEvent to the database.
        /// </summary>
        /// <param name="evn">The Manta Event to save.</param>
        /// <returns>ID of the MantaEvent.</returns>
        public static async Task <int> SaveAsync(MantaEvent evn)
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
IF EXISTS (SELECT 1 FROM man_evn_event WHERE evn_event_id = @eventID)
	BEGIN
		UPDATE man_evn_event
		SET evn_type_id = @eventType,
		evn_event_timestamp = @timestamp,
		evn_event_emailAddress = @emailAddress,
		snd_send_id = @sendId,
		evn_event_forwarded = @forwarded
		WHERE evn_event_id = @eventID
	END
ELSE
	BEGIN
		INSERT INTO man_evn_event(evn_type_id, evn_event_timestamp, evn_event_emailAddress, snd_send_id, evn_event_forwarded)
		VALUES(@eventType, @timestamp, @emailAddress, @sendId, @forwarded)

		SET @eventID = @@IDENTITY
	END
";
                cmd.Parameters.AddWithValue("@eventID", evn.ID);
                cmd.Parameters.AddWithValue("@eventType", (int)evn.EventType);
                cmd.Parameters.AddWithValue("@timestamp", evn.EventTime);
                cmd.Parameters.AddWithValue("@emailAddress", evn.EmailAddress);
                cmd.Parameters.AddWithValue("@sendId", evn.SendID);
                cmd.Parameters.AddWithValue("@forwarded", evn.Forwarded);

                if (evn is MantaBounceEvent)
                {
                    cmd.CommandText += @"
IF EXISTS (SELECT 1 FROM man_evn_bounceEvent WHERE evn_event_id = @eventId)
		UPDATE man_evn_bounceEvent
		SET evn_bounceCode_id = @bounceCode,
		evn_bounceEvent_message = @message,
		evn_bounceType_id = @bounceType
		WHERE evn_event_id = @eventId
ELSE
		INSERT INTO man_evn_bounceEvent(evn_event_id, evn_bounceCode_id, evn_bounceEvent_message, evn_bounceType_id)
		VALUES(@eventId, @bounceCode, @message, @bounceType)
";

                    cmd.Parameters.AddWithValue("@bounceCode", (int)(evn as MantaBounceEvent).BounceInfo.BounceCode);
                    cmd.Parameters.AddWithValue("@message", (evn as MantaBounceEvent).Message);
                    cmd.Parameters.AddWithValue("@bounceType", (int)(evn as MantaBounceEvent).BounceInfo.BounceType);
                }

                cmd.CommandText += @"SELECT @eventID
";

                await conn.OpenAsync();

                return(Convert.ToInt32(await cmd.ExecuteScalarAsync()));
            }
        }
Example #3
0
        /// <summary>
        /// Logs an MTA Transaction to the database.
        /// </summary>
        public static async Task <bool> LogTransactionAsync(MtaMessage msg, TransactionStatus status, string svrResponse, VirtualMTA ipAddress, MXRecord mxRecord)
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
BEGIN TRANSACTION 
INSERT INTO man_mta_transaction (mta_msg_id, ip_ipAddress_id, mta_transaction_timestamp, mta_transactionStatus_id, mta_transaction_serverResponse, mta_transaction_serverHostname)
VALUES(@msgID, @ipAddressID, GETUTCDATE(), @status, @serverResponse, @serverHostname)";

                switch (status)
                {
                case TransactionStatus.Discarded:
                case TransactionStatus.Failed:
                case TransactionStatus.TimedOut:
                    cmd.CommandText += @"UPDATE man_mta_send
								SET mta_send_rejected = mta_send_rejected + 1
								WHERE mta_send_internalID = @sendInternalID"                                ;
                    break;

                case TransactionStatus.Success:
                    cmd.CommandText += @"UPDATE man_mta_send
								SET mta_send_accepted = mta_send_accepted + 1
								WHERE mta_send_internalID = @sendInternalID"                                ;
                    break;
                }

                cmd.CommandText += " COMMIT TRANSACTION";
                cmd.Parameters.AddWithValue("@sendInternalID", msg.InternalSendID);

                cmd.Parameters.AddWithValue("@msgID", msg.ID);
                if (ipAddress != null)
                {
                    cmd.Parameters.AddWithValue("@ipAddressID", ipAddress.ID);
                }
                else
                {
                    cmd.Parameters.AddWithValue("@ipAddressID", DBNull.Value);
                }

                if (mxRecord != null)
                {
                    cmd.Parameters.AddWithValue("@serverHostname", mxRecord.Host);
                }
                else
                {
                    cmd.Parameters.AddWithValue("@serverHostname", DBNull.Value);
                }

                cmd.Parameters.AddWithValue("@status", (int)status);
                cmd.Parameters.AddWithValue("@serverResponse", svrResponse);
                await conn.OpenAsync();

                await cmd.ExecuteNonQueryAsync();

                return(true);
            }
        }
Example #4
0
 /// <summary>
 /// Deletes all of the local domains from the database.
 /// </summary>
 public static void ClearLocalDomains()
 {
     using (SqlConnection conn = MantaDB.GetSqlConnection())
     {
         SqlCommand cmd = conn.CreateCommand();
         cmd.CommandText = @"DELETE FROM man_cfg_localDomain";
         conn.Open();
         cmd.ExecuteNonQuery();
     }
 }
Example #5
0
        /// <summary>
        /// Gets all of the Virtual MTA Groups from the database; doesn't include Virtual MTA objects.
        /// </summary>
        /// <returns></returns>
        public static IList <VirtualMtaGroup> GetVirtualMtaGroups()
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
SELECT *
FROM man_ip_group";
                return(DataRetrieval.GetCollectionFromDatabase <VirtualMtaGroup>(cmd, CreateAndFillVirtualMtaGroup));
            }
        }
Example #6
0
        /// <summary>
        /// Gets all of the MantaEvents from the database.
        /// </summary>
        /// <returns>Collection of MantaEvent objects.</returns>
        public static IList <MantaEvent> GetEvents()
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"SELECT [evt].*, [bnc].evn_bounceCode_id, [bnc].evn_bounceEvent_message, [bnc].evn_bounceType_id
FROM man_evn_event AS [evt]
LEFT JOIN man_evn_bounceEvent AS [bnc] ON [evt].evn_event_id = [bnc].evn_event_id";
                return(DataRetrieval.GetCollectionFromDatabase <MantaEvent> (cmd, CreateAndFillMantaEventFromRecord));
            }
        }
Example #7
0
        /// <summary>
        /// Gets an array of the local domains from the database.
        /// All domains are toLowered!
        /// </summary>
        /// <returns></returns>
        public static IList <LocalDomain> GetLocalDomainsArray()
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
SELECT *
FROM man_cfg_localDomain";
                return(DataRetrieval.GetCollectionFromDatabase <LocalDomain> (cmd, CreateAndFillLocalDomainFromRecord));
            }
        }
Example #8
0
        /// <summary>
        /// ExecuteScalar getting value of colName in man_cfg_para
        /// </summary>
        /// <param name="colName"></param>
        /// <returns></returns>
        private static object GetColumnValue(string colName)
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
SELECT " + colName + @"
FROM man_cfg_para";
                conn.Open();
                return(cmd.ExecuteScalar());
            }
        }
Example #9
0
        /// <summary>
        /// Gets a collection of the Virtual MTAs that belong to a Virtual MTA Group from the database.
        /// </summary>
        /// <param name="groupID">ID of the Virtual MTA Group to get Virtual MTAs for.</param>
        /// <returns></returns>
        public static IList <VirtualMTA> GetVirtualMtasInVirtualMtaGroup(int groupID)
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"SELECT *
FROM man_ip_ipAddress as [ip]
WHERE [ip].ip_ipAddress_id IN (SELECT [grp].ip_ipAddress_id FROM man_ip_groupMembership as [grp] WHERE [grp].ip_group_id = @groupID) ";
                cmd.Parameters.AddWithValue("@groupID", groupID);
                return(DataRetrieval.GetCollectionFromDatabase <VirtualMTA>(cmd, CreateAndFillVirtualMtaFromRecord));
            }
        }
Example #10
0
        /// <summary>
        /// Get the Outbound Rules from the database.
        /// </summary>
        /// <returns></returns>
        public static IList <OutboundRule> GetOutboundRules()
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
SELECT *
FROM man_rle_rule";

                return(DataRetrieval.GetCollectionFromDatabase <OutboundRule>(cmd, CreateAndFillOutboundRule));
            }
        }
Example #11
0
        /// <summary>
        /// Gets the return path domain.
        /// </summary>
        public static string GetReturnPathDomain()
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
SELECT [dmn].cfg_localDomain_domain
FROM man_cfg_localDomain as [dmn]
WHERE [dmn].cfg_localDomain_id = (SELECT TOP 1 [para].cfg_para_returnPathDomain_id FROM man_cfg_para as [para])";
                conn.Open();
                return(cmd.ExecuteScalar().ToString());
            }
        }
Example #12
0
        /// <summary>
        /// Gets the specified send.
        /// </summary>
        /// <param name="internalSendID">Internal ID of the Send to get.</param>
        /// <returns>The specified Send or NULL if none with the ID exist.</returns>
        public static async Task <Send> GetSendAsync(int internalSendID)
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
SELECT *
FROM man_mta_send WITH(NOLOCK)
WHERE mta_send_internalId = @internalSndID";
                cmd.Parameters.AddWithValue("@internalSndID", internalSendID);
                return(await DataRetrieval.GetSingleObjectFromDatabaseAsync <Send>(cmd, CreateAndFillSendFromRecord));
            }
        }
Example #13
0
        /// <summary>
        /// Gets a single MTA IP Addresses from the Database.
        /// </summary>
        /// <returns></returns>
        public static VirtualMTA GetVirtualMta(int id)
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
SELECT *
FROM man_ip_ipAddress
WHERE ip_ipAddress_id = @id";
                cmd.Parameters.AddWithValue("@id", id);
                return(DataRetrieval.GetSingleObjectFromDatabase <VirtualMTA>(cmd, CreateAndFillVirtualMtaFromRecord));
            }
        }
Example #14
0
        /// <summary>
        /// Saves the specified value to the column in the config table.
        /// </summary>
        /// <param name="colName">Name of the column to set.</param>
        /// <param name="value">Value to set.</param>
        private static void SetColumnValue(string colName, object value)
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
UPDATE man_cfg_para
SET " + colName + @" = @value";
                conn.Open();
                cmd.Parameters.AddWithValue("@value", value);
                cmd.ExecuteNonQuery();
            }
        }
Example #15
0
        /// <summary>
        /// Get the Outbound MX Patterns from the database.
        /// </summary>
        /// <returns></returns>
        public static IList <OutboundMxPattern> GetOutboundRulePatterns()
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
SELECT *
FROM man_rle_mxPattern
ORDER BY rle_mxPattern_id DESC"; // Order descending so default -1 is always at the bottom!

                return(DataRetrieval.GetCollectionFromDatabase <OutboundMxPattern>(cmd, CreateAndFillOutboundMxPattern));
            }
        }
Example #16
0
        /// <summary>
        /// Gets a MantaEvent from the database.
        /// </summary>
        /// <returns>The event from the database of NULL if one wasn't found with the ID</returns>
        public static MantaEvent GetEvent(int ID)
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"SELECT [evt].*, [bnc].evn_bounceCode_id, [bnc].evn_bounceEvent_message, [bnc].evn_bounceType_id
FROM man_evn_event AS [evt]
LEFT JOIN man_evn_bounceEvent AS [bnc] ON [evt].evn_event_id = [bnc].evn_event_id
WHERE [evt].evn_event_id = @eventId";
                cmd.Parameters.AddWithValue("@eventId", ID);
                return(DataRetrieval.GetSingleObjectFromDatabase <MantaEvent>(cmd, CreateAndFillMantaEventFromRecord));
            }
        }
Example #17
0
        /// <summary>
        /// Gets a Virtual MTA Group from the database; doesn't include Virtual MTA objects.
        /// </summary>
        /// <param name="ID"></param>
        /// <returns></returns>
        public static VirtualMtaGroup GetVirtualMtaGroup(int id)
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
SELECT *
FROM man_ip_group as [grp]
WHERE [grp].ip_group_id = @groupID";
                cmd.Parameters.AddWithValue("@groupID", id);
                return(DataRetrieval.GetSingleObjectFromDatabase <VirtualMtaGroup>(cmd, CreateAndFillVirtualMtaGroup));
            }
        }
Example #18
0
        /// <summary>
        /// Saves the virtual mta group to the database.
        /// </summary>
        /// <param name="grp">Group to save.</param>
        public static void Save(VirtualMtaGroup grp)
        {
            StringBuilder groupMembershipInserts = new StringBuilder();

            foreach (VirtualMTA vmta in grp.VirtualMtaCollection)
            {
                groupMembershipInserts.AppendFormat(@"{1}INSERT INTO man_ip_groupMembership(ip_group_id, ip_ipAddress_id)
VALUES(@id,{0}){1}", vmta.ID, Environment.NewLine);
            }

            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
BEGIN TRANSACTION

IF EXISTS(SELECT 1 FROM man_ip_group WHERE ip_group_id = @id)
	UPDATE man_ip_group
	SET ip_group_name = @name,
		ip_group_description = @description
	WHERE ip_group_id = @id
ELSE
	BEGIN
		INSERT INTO man_ip_group(ip_group_name, ip_group_description)
		VALUES(@name, @description)

		SELECT @id = @@IDENTITY
	END

DELETE 
FROM man_ip_groupMembership
WHERE ip_group_id = @id

" + groupMembershipInserts.ToString() + @"

COMMIT TRANSACTION";
                cmd.Parameters.AddWithValue("@id", grp.ID);
                cmd.Parameters.AddWithValue("@name", grp.Name);

                if (grp.Description == null)
                {
                    cmd.Parameters.AddWithValue("@description", DBNull.Value);
                }
                else
                {
                    cmd.Parameters.AddWithValue("@description", grp.Description);
                }
                conn.Open();
                cmd.ExecuteNonQuery();
            }
        }
Example #19
0
        /// <summary>
        /// Gets <param name="maxEventsToGet"/> amount of Events that need forwarding from the database.
        /// </summary>
        public static IList <MantaEvent> GetEventsForForwarding(int maxEventsToGet)
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
SELECT TOP " + maxEventsToGet + @" [evt].*, [bnc].evn_bounceCode_id, [bnc].evn_bounceEvent_message, [bnc].evn_bounceType_id
FROM man_evn_event AS [evt]
LEFT JOIN man_evn_bounceEvent AS [bnc] ON [evt].evn_event_id = [bnc].evn_event_id
WHERE evn_event_forwarded = 0
ORDER BY evn_event_id ASC";
                return(DataRetrieval.GetCollectionFromDatabase <MantaEvent>(cmd, CreateAndFillMantaEventFromRecord));
            }
        }
 /// <summary>
 /// Saves the array of IP Address that are allowed to relay messages through MantaMTA.
 /// Overwrites the existing addresses.
 /// </summary>
 /// <param name="addresses">IP Addresses to allow relaying for.</param>
 public static void SetRelayingPermittedIPAddresses(IPAddress[] addresses)
 {
     using (SqlConnection conn = MantaDB.GetSqlConnection())
     {
         SqlCommand cmd = conn.CreateCommand();
         cmd.CommandText = @"DELETE FROM man_cfg_relayingPermittedIp";
         foreach (IPAddress addr in addresses)
         {
             cmd.CommandText += System.Environment.NewLine + "INSERT INTO man_cfg_relayingPermittedIp(cfg_relayingPermittedIp_ip) VALUES ( '" + addr.ToString() + "' )";
         }
         conn.Open();
         cmd.ExecuteNonQuery();
     }
 }
Example #21
0
        /// <summary>
        /// Sets the status of the specified send to the specified status.
        /// </summary>
        /// <param name="sendID">ID of the send to set the staus of.</param>
        /// <param name="status">The status to set the send to.</param>
        public static void SetSendStatus(string sendID, SendStatus status)
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
UPDATE man_mta_send
SET mta_sendStatus_id = @sendStatus
WHERE mta_send_id = @sendID";
                cmd.Parameters.AddWithValue("@sendID", sendID);
                cmd.Parameters.AddWithValue("@sendStatus", (int)status);
                conn.Open();
                cmd.ExecuteNonQuery();
            }
        }
Example #22
0
        public static async Task <bool> HasBeenHandledAsync(Guid messageID)
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"IF EXISTS(SELECT 1
FROM man_mta_transaction WITH(readuncommitted)
WHERE man_mta_transaction.mta_msg_id = @msgID
AND man_mta_transaction.mta_transactionStatus_id IN (2,3,4,6))
	SELECT 1
ELSE 
	SELECT 0"    ;
                cmd.Parameters.AddWithValue("@msgID", messageID);
                await conn.OpenAsync();

                return(Convert.ToBoolean(await cmd.ExecuteScalarAsync()));
            }
        }
Example #23
0
        /// <summary>
        /// Deletes the specified Virtual MTA group.
        /// </summary>
        /// <param name="id">ID of the virtual mta group to delete.</param>
        public static void Delete(int id)
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
DELETE 
FROM man_ip_group
WHERE ip_group_id = @id

DELETE 
FROM man_ip_groupMembership
WHERE ip_group_id = @id";
                cmd.Parameters.AddWithValue("@id", id);
                conn.Open();
                cmd.ExecuteNonQuery();
            }
        }
Example #24
0
        /// <summary>
        /// Saves a local domain to the database.
        /// </summary>
        /// <param name="domain">Domain to add. Does nothing if domain already exists.</param>
        public static void Save(LocalDomain localDomain)
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
IF EXISTS (SELECT 1 FROM man_cfg_localDomain WHERE cfg_localDomain_id = @id)
	UPDATE man_cfg_localDomain
	SET cfg_localDomain_domain = @domain,
	cfg_localDomain_name = @name,
	cfg_localDomain_description = @description
	WHERE cfg_localDomain_domain = @id
ELSE
	BEGIN
	IF(@id > 0)
		BEGIN
			SET IDENTITY_INSERT man_cfg_localDomain ON

			INSERT INTO man_cfg_localDomain (cfg_localDomain_id, cfg_localDomain_domain, cfg_localDomain_name, cfg_localDomain_description)
			VALUES(@id, @domain, @name, @description)

			SET IDENTITY_INSERT man_cfg_localDomain OFF
		END
	ELSE
		INSERT INTO man_cfg_localDomain (cfg_localDomain_domain, cfg_localDomain_name, cfg_localDomain_description)
		VALUES(@domain, @name, @description)

	END"    ;
                cmd.Parameters.AddWithValue("@id", localDomain.ID);
                cmd.Parameters.AddWithValue("@domain", localDomain.Hostname);
                cmd.Parameters.AddWithValue("@name", localDomain.Name);

                if (localDomain.Description == null)
                {
                    cmd.Parameters.AddWithValue("@description", DBNull.Value);
                }
                else
                {
                    cmd.Parameters.AddWithValue("@description", localDomain.Description);
                }
                conn.Open();
                cmd.ExecuteNonQuery();
            }
        }
        /// <summary>
        /// Gets an array of the IP addresses that are permitted to use this server for relaying from the database.
        /// </summary>
        /// <returns></returns>
        public static string[] GetRelayingPermittedIPAddresses()
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
SELECT cfg_relayingPermittedIp_ip
FROM man_cfg_relayingPermittedIp";
                conn.Open();
                ArrayList     results = new ArrayList();
                SqlDataReader reader  = cmd.ExecuteReader();
                while (reader.Read())
                {
                    results.Add(reader.GetString("cfg_relayingPermittedIp_ip"));
                }

                return((string[])results.ToArray(typeof(string)));
            }
        }
Example #26
0
        public static async Task <string> GetMailFrom(Guid messageId)
        {
            using (var conn = MantaDB.GetSqlConnection())
            {
                var cmd = conn.CreateCommand();
                cmd.CommandText = @"SELECT TOP 1 mta_msg_mailFrom
FROM man_mta_msg
WHERE mta_msg_id = @msgId";
                cmd.Parameters.AddWithValue("@msgId", messageId);
                await conn.OpenAsync().ConfigureAwait(false);

                var result = await cmd.ExecuteScalarAsync().ConfigureAwait(false);

                if (result == null)
                {
                    return(string.Empty);
                }
                return(result.ToString());
            }
        }
        /// <summary>
        /// Checks an address to see if it appears in the list of feedback loop addresses.
        /// </summary>
        /// <param name="address">Address to check.</param>
        /// <returns>TRUE if exists, FALSE if not.</returns>
        public static bool IsFeedbackLoopEmailAddress(string address)
        {
            using (SqlConnection conn = MantaDB.GetSqlConnection())
            {
                SqlCommand cmd = conn.CreateCommand();
                cmd.CommandText = @"
SELECT 1 
FROM man_mta_fblAddress
WHERE mta_fblAddress_address = @address";
                cmd.Parameters.AddWithValue("@address", address);
                conn.Open();
                object result = cmd.ExecuteScalar();
                if (result == null)
                {
                    return(false);
                }

                return(true);
            }
        }