/// <summary>
/// Called when the operation finishes
/// </summary>
/// <param name="result">The result object, if this derives from an exception, the operation failed</param>
public void OnFinish(object result)
{
//If no email is supplied, then skip
if (string.IsNullOrEmpty(m_to))
return;
//If we do not report this action, then skip
if (!m_sendAll && !string.Equals(m_operationname, "Backup", StringComparison.InvariantCultureIgnoreCase))
return;
if (string.Equals(m_operationname, "Backup", StringComparison.InvariantCultureIgnoreCase))
{
MailLevels level;
if (result is Exception)
level = MailLevels.Error;
else if (result != null && result is Library.Interface.IBackupResults && (result as Library.Interface.IBackupResults).Errors.Count() > 0)
level = MailLevels.Warning;
else
level = MailLevels.Success;
m_parsedresultlevel = level.ToString();
if (m_level != MailLevels.All)
{
//Check if this level should send mail
if ((m_level & level) == 0)
return;
}
}
try
{
string body = m_body;
string subject = m_subject;
if (body != DEFAULT_BODY && System.IO.File.Exists(body))
body = System.IO.File.ReadAllText(body);
body = ReplaceTemplate(body, result, false);
subject = ReplaceTemplate(subject, result, true);
var message = new MimeMessage();
MailboxAddress mailbox;
foreach (string s in m_to.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries))
if(MailboxAddress.TryParse(s.Replace("\"", ""), out mailbox))
message.To.Add(mailbox);
MailboxAddress mailboxToFirst = (MailboxAddress) message.To[0];
string toMailDomain = mailboxToFirst.Address.Substring(mailboxToFirst.Address.LastIndexOf("@") + 1);
string from = m_from.Trim().Replace("\"", "");
if (from.IndexOf('@') < 0)
{
if (from.EndsWith(">"))
from = from.Insert(from.Length - 1, "@" + toMailDomain);
else
from = string.Format("No Reply - Backup report <{0}@{1}>", from, toMailDomain);
}
if (MailboxAddress.TryParse(from, out mailbox))
message.From.Add(mailbox);
message.Subject = subject;
message.Body = new TextPart("plain") { Text = body, ContentTransferEncoding = ContentEncoding.EightBit };
List<string> servers = null;
if (string.IsNullOrEmpty(m_server))
{
var dnslite = new DnsLib.DnsLite();
var dnslist = new List<string>();
//Grab all IPv4 adresses
foreach (NetworkInterface networkInterface in NetworkInterface.GetAllNetworkInterfaces())
try
{
foreach (IPAddress dnsAdress in networkInterface.GetIPProperties().DnsAddresses)
if (dnsAdress.AddressFamily == AddressFamily.InterNetwork)
dnslist.Add(dnsAdress.ToString());
}
catch { }
dnslist = dnslist.Distinct().ToList();
// If we have no DNS servers, try Google and OpenDNS
if (dnslist.Count == 0)
{
// https://developers.google.com/speed/public-dns/
dnslist.Add("8.8.8.8");
dnslist.Add("8.8.4.4");
//http://www.opendns.com/opendns-ip-addresses/
dnslist.Add("208.67.222.222");
dnslist.Add("208.67.220.220");
}
var oldStyleList = new ArrayList();
foreach(var s in dnslist)
oldStyleList.Add(s);
dnslite.setDnsServers(oldStyleList);
servers = dnslite.getMXRecords(toMailDomain).OfType<MXRecord>().OrderBy(record => record.preference).Select(x => "smtp://" + x.exchange).Distinct().ToList();
if (servers.Count == 0)
throw new IOException(Strings.SendMail.FailedToLookupMXServer(OPTION_SERVER));
}
else
{
servers = (from n in m_server.Split(new string[] { ";" }, StringSplitOptions.RemoveEmptyEntries)
let srv = (n == null || n.IndexOf("://", StringComparison.InvariantCultureIgnoreCase) > 0) ? n : "smtp://" + n
where !string.IsNullOrEmpty(srv)
select srv).Distinct().ToList();
}
Exception lastEx = null;
string lastServer = null;
foreach(var server in servers)
{
if (lastEx != null)
Logging.Log.WriteMessage(Strings.SendMail.SendMailFailedRetryError(lastServer, lastEx.Message, server), LogMessageType.Warning, lastEx);
lastServer = server;
try
{
using (MemoryStream ms = new MemoryStream())
{
try
{
using (var client = new SmtpClient(new MailKit.ProtocolLogger(ms)))
{
client.Timeout = (int)TimeSpan.FromMinutes(1).TotalMilliseconds;
client.Connect(new System.Uri(server));
if (!string.IsNullOrEmpty(m_username) && !string.IsNullOrEmpty(m_password))
client.Authenticate(m_username, m_password);
client.Send(message);
client.Disconnect(true);
}
}
finally
{
var log = Encoding.UTF8.GetString(ms.GetBuffer());
Logging.Log.WriteMessage(Strings.SendMail.SendMailLog(log), LogMessageType.Profiling);
}
}
lastEx = null;
Logging.Log.WriteMessage(Strings.SendMail.SendMailSuccess(server), LogMessageType.Information);
break;
}
catch (Exception ex)
{
lastEx = ex;
}
}
if (lastEx != null)
throw lastEx;
}
catch (Exception ex)
{
Exception top = ex;
var sb = new StringBuilder();
while (top != null)
{
if (sb.Length != 0)
sb.Append("--> ");
sb.AppendFormat("{0}: {1}{2}", top.GetType().FullName, top.Message, Environment.NewLine);
top = top.InnerException;
}
Logging.Log.WriteMessage(Strings.SendMail.SendMailFailedError(sb.ToString()), LogMessageType.Warning, ex);
}
}
/// <summary>
/// Called when the operation finishes
/// </summary>
/// <param name="result">The result object, if this derives from an exception, the operation failed</param>
public void OnFinish(object result)
{
//If no email is supplied, then skip
if (string.IsNullOrEmpty(m_to))
return;
//If we do not report this action, then skip
if (!m_sendAll && !string.Equals(m_operationname, "Backup", StringComparison.InvariantCultureIgnoreCase))
return;
if (string.Equals(m_operationname, "Backup", StringComparison.InvariantCultureIgnoreCase))
{
if (m_level != MailLevels.All)
{
MailLevels level;
if (result is Exception)
level = MailLevels.Error;
else if (result != null && result is Library.Interface.IBackupResults && (result as Library.Interface.IBackupResults).Errors.Count() > 0)
level = MailLevels.Warning;
else
level = MailLevels.Success;
//Check if this level should send mail
if ((m_level & level) == 0)
return;
}
}
try
{
string body = m_body;
string subject = m_subject;
if (body != DEFAULT_BODY && System.IO.File.Exists(body))
body = System.IO.File.ReadAllText(body);
body = ReplaceTemplate(body, result);
subject = ReplaceTemplate(subject, result);
var message = new MailMessage();
foreach(string s in m_to.Split(new [] { "," }, StringSplitOptions.RemoveEmptyEntries))
message.To.Add(new MailAddress(s.Replace("\"", "")));
string from = m_from.Trim();
if (from.IndexOf('@') < 0)
{
if (from.EndsWith(">"))
from = from.Insert(from.Length - 1, "@" + message.To[0].Host);
else
from = string.Format("No Reply - Backup report <{0}@{1}>", from, message.To[0].Host);
}
message.From = new MailAddress(from.Replace("\"", ""));
message.Subject = subject;
message.Body = body;
message.BodyEncoding = message.SubjectEncoding = Encoding.UTF8;
List<string> servers = null;
if (string.IsNullOrEmpty(m_server))
{
var dnslite = new DnsLib.DnsLite();
var dnslist = new List<string>();
//Grab all IPv4 adresses
foreach (NetworkInterface networkInterface in NetworkInterface.GetAllNetworkInterfaces())
try
{
foreach (IPAddress dnsAdress in networkInterface.GetIPProperties().DnsAddresses)
if (dnsAdress.AddressFamily == AddressFamily.InterNetwork)
dnslist.Add(dnsAdress.ToString());
}
catch { }
dnslist = dnslist.Distinct().ToList();
// If we have no DNS servers, try Google and OpenDNS
if (dnslist.Count == 0)
{
// https://developers.google.com/speed/public-dns/
dnslist.Add("8.8.8.8");
dnslist.Add("8.8.4.4");
//http://www.opendns.com/opendns-ip-addresses/
dnslist.Add("208.67.222.222");
dnslist.Add("208.67.220.220");
}
var oldStyleList = new ArrayList();
foreach(var s in dnslist)
oldStyleList.Add(s);
dnslite.setDnsServers(oldStyleList);
servers = dnslite.getMXRecords(message.To[0].Host).OfType<MXRecord>().OrderBy(record => record.preference).Select(x => "smtp://" + x.exchange).Distinct().ToList();
if (servers.Count == 0)
throw new IOException(string.Format(Strings.SendMail.FailedToLookupMXServer, OPTION_SERVER));
}
else
{
servers = (from n in m_server.Split(new string[] { ";" }, StringSplitOptions.RemoveEmptyEntries)
let srv = (n == null || n.IndexOf("://", StringComparison.InvariantCultureIgnoreCase) > 0) ? n : "smtp://" + n
where !string.IsNullOrEmpty(srv)
select srv).Distinct().ToList();
}
Exception lastEx = null;
string lastServer = null;
foreach(var server in servers)
{
if (lastEx != null)
Logging.Log.WriteMessage(string.Format(Strings.SendMail.SendMailFailedRetryError, lastServer, lastEx.Message, server), LogMessageType.Warning, lastEx);
lastServer = server;
try
{
var serverUri = new System.Uri(server);
var useTls = string.Equals(serverUri.Scheme, "smtptls", StringComparison.InvariantCultureIgnoreCase) || string.Equals(serverUri.Scheme, "tls", StringComparison.InvariantCultureIgnoreCase);
var port = serverUri.Port <= 0 ? (useTls ? 587 : 25) : serverUri.Port;
var client = new SmtpClient(serverUri.Host, port);
client.Timeout = (int)TimeSpan.FromMinutes(1).TotalMilliseconds;
if (!string.IsNullOrEmpty(m_username) && !string.IsNullOrEmpty(m_password))
client.Credentials = new NetworkCredential(m_username, m_password);
//This ensures that you can override settings from an app.config file
if (useTls)
client.EnableSsl = true;
client.Send(message);
lastEx = null;
Logging.Log.WriteMessage(string.Format(Strings.SendMail.SendMailSuccess, server), LogMessageType.Information);
break;
}
catch (Exception ex)
{
lastEx = ex;
}
}
if (lastEx != null)
throw lastEx;
}
catch (Exception ex)
{
Exception top = ex;
var sb = new StringBuilder();
while (top != null)
{
if (sb.Length != 0)
sb.Append("--> ");
sb.AppendFormat("{0}: {1}{2}", top.GetType().FullName, top.Message, Environment.NewLine);
top = top.InnerException;
}
Logging.Log.WriteMessage(string.Format(Strings.SendMail.SendMailFailedError, sb.ToString()), LogMessageType.Warning, ex);
}
}
/// <summary>
/// Called when the operation finishes
/// </summary>
/// <param name="result">The result object, if this derives from an exception, the operation failed</param>
public void OnFinish(object result)
{
//If no email is supplied, then skip
if (string.IsNullOrEmpty(m_to))
{
return;
}
//If we do not report this action, then skip
if (!m_sendAll && !string.Equals(m_operationname, "Backup", StringComparison.InvariantCultureIgnoreCase))
{
return;
}
if (string.Equals(m_operationname, "Backup", StringComparison.InvariantCultureIgnoreCase))
{
MailLevels level;
if (result is Exception)
{
level = MailLevels.Error;
}
else if (result != null && result is Library.Interface.IBackupResults && (result as Library.Interface.IBackupResults).Errors.Count() > 0)
{
level = MailLevels.Warning;
}
else
{
level = MailLevels.Success;
}
m_parsedresultlevel = level.ToString();
if (m_level != MailLevels.All)
{
//Check if this level should send mail
if ((m_level & level) == 0)
{
return;
}
}
}
try
{
string body = m_body;
string subject = m_subject;
if (body != DEFAULT_BODY && System.IO.File.Exists(body))
{
body = System.IO.File.ReadAllText(body);
}
body = ReplaceTemplate(body, result, false);
subject = ReplaceTemplate(subject, result, true);
var message = new MailMessage();
foreach (string s in m_to.Split(new [] { "," }, StringSplitOptions.RemoveEmptyEntries))
{
message.To.Add(new MailAddress(s.Replace("\"", "")));
}
string from = m_from.Trim();
if (from.IndexOf('@') < 0)
{
if (from.EndsWith(">"))
{
from = from.Insert(from.Length - 1, "@" + message.To[0].Host);
}
else
{
from = string.Format("No Reply - Backup report <{0}@{1}>", from, message.To[0].Host);
}
}
message.From = new MailAddress(from.Replace("\"", ""));
message.Subject = subject;
message.Body = body;
message.BodyEncoding = message.SubjectEncoding = Encoding.UTF8;
List <string> servers = null;
if (string.IsNullOrEmpty(m_server))
{
var dnslite = new DnsLib.DnsLite();
var dnslist = new List <string>();
//Grab all IPv4 adresses
foreach (NetworkInterface networkInterface in NetworkInterface.GetAllNetworkInterfaces())
{
try
{
foreach (IPAddress dnsAdress in networkInterface.GetIPProperties().DnsAddresses)
{
if (dnsAdress.AddressFamily == AddressFamily.InterNetwork)
{
dnslist.Add(dnsAdress.ToString());
}
}
}
catch { }
}
dnslist = dnslist.Distinct().ToList();
// If we have no DNS servers, try Google and OpenDNS
if (dnslist.Count == 0)
{
// https://developers.google.com/speed/public-dns/
dnslist.Add("8.8.8.8");
dnslist.Add("8.8.4.4");
//http://www.opendns.com/opendns-ip-addresses/
dnslist.Add("208.67.222.222");
dnslist.Add("208.67.220.220");
}
var oldStyleList = new ArrayList();
foreach (var s in dnslist)
{
oldStyleList.Add(s);
}
dnslite.setDnsServers(oldStyleList);
servers = dnslite.getMXRecords(message.To[0].Host).OfType <MXRecord>().OrderBy(record => record.preference).Select(x => "smtp://" + x.exchange).Distinct().ToList();
if (servers.Count == 0)
{
throw new IOException(Strings.SendMail.FailedToLookupMXServer(OPTION_SERVER));
}
}
else
{
servers = (from n in m_server.Split(new string[] { ";" }, StringSplitOptions.RemoveEmptyEntries)
let srv = (n == null || n.IndexOf("://", StringComparison.InvariantCultureIgnoreCase) > 0) ? n : "smtp://" + n
where !string.IsNullOrEmpty(srv)
select srv).Distinct().ToList();
}
Exception lastEx = null;
string lastServer = null;
foreach (var server in servers)
{
if (lastEx != null)
{
Logging.Log.WriteMessage(Strings.SendMail.SendMailFailedRetryError(lastServer, lastEx.Message, server), LogMessageType.Warning, lastEx);
}
lastServer = server;
try
{
var serverUri = new System.Uri(server);
var useTls = string.Equals(serverUri.Scheme, "smtptls", StringComparison.InvariantCultureIgnoreCase) || string.Equals(serverUri.Scheme, "tls", StringComparison.InvariantCultureIgnoreCase);
var port = serverUri.Port <= 0 ? (useTls ? 587 : 25) : serverUri.Port;
var client = new SmtpClient(serverUri.Host, port);
client.Timeout = (int)TimeSpan.FromMinutes(1).TotalMilliseconds;
if (!string.IsNullOrEmpty(m_username) && !string.IsNullOrEmpty(m_password))
{
client.Credentials = new NetworkCredential(m_username, m_password);
}
//This ensures that you can override settings from an app.config file
if (useTls)
{
client.EnableSsl = true;
}
client.Send(message);
lastEx = null;
Logging.Log.WriteMessage(Strings.SendMail.SendMailSuccess(server), LogMessageType.Information);
break;
}
catch (Exception ex)
{
lastEx = ex;
}
}
if (lastEx != null)
{
throw lastEx;
}
}
catch (Exception ex)
{
Exception top = ex;
var sb = new StringBuilder();
while (top != null)
{
if (sb.Length != 0)
{
sb.Append("--> ");
}
sb.AppendFormat("{0}: {1}{2}", top.GetType().FullName, top.Message, Environment.NewLine);
top = top.InnerException;
}
Logging.Log.WriteMessage(Strings.SendMail.SendMailFailedError(sb.ToString()), LogMessageType.Warning, ex);
}
}
/// <summary>
/// Called when the operation finishes
/// </summary>
/// <param name="result">The result object, if this derives from an exception, the operation failed</param>
public void OnFinish(object result)
{
//If no email is supplied, then skip
if (string.IsNullOrEmpty(m_to))
{
return;
}
//If we do not report this action, then skip
if (!m_sendAll && !string.Equals(m_operationname, "Backup", StringComparison.InvariantCultureIgnoreCase))
{
return;
}
ParsedResultType level;
if (result is Exception)
{
level = ParsedResultType.Fatal;
}
else if (result != null && result is Library.Interface.IBasicResults)
{
level = ((IBasicResults)result).ParsedResult;
}
else
{
level = ParsedResultType.Error;
}
m_parsedresultlevel = level.ToString();
if (string.Equals(m_operationname, "Backup", StringComparison.InvariantCultureIgnoreCase))
{
if (!m_levels.Any(x => string.Equals(x, "all", StringComparison.OrdinalIgnoreCase)))
{
//Check if this level should send mail
if (!m_levels.Any(x => string.Equals(x, level.ToString(), StringComparison.OrdinalIgnoreCase)))
{
return;
}
}
}
try
{
string body = m_body;
string subject = m_subject;
if (body != DEFAULT_BODY && System.IO.Path.IsPathRooted(body) && System.IO.File.Exists(body))
{
body = System.IO.File.ReadAllText(body);
}
body = ReplaceTemplate(body, result, false);
subject = ReplaceTemplate(subject, result, true);
var message = new MimeMessage();
MailboxAddress mailbox;
foreach (string s in m_to.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries))
{
if (MailboxAddress.TryParse(s.Replace("\"", ""), out mailbox))
{
message.To.Add(mailbox);
}
}
var mailboxToFirst = (MailboxAddress)message.To.First();
string toMailDomain = mailboxToFirst.Address.Substring(mailboxToFirst.Address.LastIndexOf("@", StringComparison.Ordinal) + 1);
string from = m_from.Trim().Replace("\"", "");
if (from.IndexOf('@') < 0)
{
if (from.EndsWith(">", StringComparison.Ordinal))
{
from = from.Insert(from.Length - 1, "@" + toMailDomain);
}
else
{
from = string.Format("No Reply - Backup report <{0}@{1}>", from, toMailDomain);
}
}
if (MailboxAddress.TryParse(from, out mailbox))
{
message.From.Add(mailbox);
}
message.Subject = subject;
message.Body = new TextPart("plain")
{
Text = body, ContentTransferEncoding = ContentEncoding.EightBit
};
List <string> servers = null;
if (string.IsNullOrEmpty(m_server))
{
var dnslite = new DnsLib.DnsLite();
var dnslist = new List <string>();
//Grab all IPv4 addresses
foreach (NetworkInterface networkInterface in NetworkInterface.GetAllNetworkInterfaces())
{
try
{
foreach (IPAddress dnsAddress in networkInterface.GetIPProperties().DnsAddresses)
{
if (dnsAddress.AddressFamily == AddressFamily.InterNetwork)
{
dnslist.Add(dnsAddress.ToString());
}
}
}
catch { }
}
dnslist = dnslist.Distinct().ToList();
// If we have no DNS servers, try Google and OpenDNS
if (dnslist.Count == 0)
{
// https://developers.google.com/speed/public-dns/
dnslist.Add("8.8.8.8");
dnslist.Add("8.8.4.4");
//http://www.opendns.com/opendns-ip-addresses/
dnslist.Add("208.67.222.222");
dnslist.Add("208.67.220.220");
}
var records = new List <MXRecord>();
foreach (var s in dnslist)
{
var res = dnslite.getMXRecords(toMailDomain, s);
if (res != null)
{
records.AddRange(res.OfType <MXRecord>());
}
}
servers = records.OrderBy(record => record.preference).Select(x => "smtp://" + x.exchange).Distinct().ToList();
if (servers.Count == 0)
{
throw new IOException(Strings.SendMail.FailedToLookupMXServer(OPTION_SERVER));
}
}
else
{
servers = (from n in m_server.Split(new string[] { ";" }, StringSplitOptions.RemoveEmptyEntries)
let srv = (n == null || n.IndexOf("://", StringComparison.InvariantCultureIgnoreCase) > 0) ? n : "smtp://" + n
where !string.IsNullOrEmpty(srv)
select srv).Distinct().ToList();
}
Exception lastEx = null;
string lastServer = null;
foreach (var server in servers)
{
if (lastEx != null)
{
Logging.Log.WriteMessage(Strings.SendMail.SendMailFailedRetryError(lastServer, lastEx.Message, server), LogMessageType.Warning, lastEx);
}
lastServer = server;
try
{
using (MemoryStream ms = new MemoryStream())
{
try
{
using (var client = new SmtpClient(new MailKit.ProtocolLogger(ms)))
{
client.Timeout = (int)TimeSpan.FromMinutes(1).TotalMilliseconds;
// Backward compatibility fix for setup prior to using MailKit
var uri = new System.Uri(server);
if (uri.Scheme.ToLowerInvariant() == "tls")
{
uri = new System.Uri("smtp://" + uri.Host + ":" + (uri.Port <= 0 ? 587 : uri.Port) + "/?starttls=always");
}
client.Connect(uri);
if (!string.IsNullOrEmpty(m_username) && !string.IsNullOrEmpty(m_password))
{
client.Authenticate(m_username, m_password);
}
client.Send(message);
client.Disconnect(true);
}
}
finally
{
var log = Encoding.UTF8.GetString(ms.GetBuffer());
if (!string.IsNullOrWhiteSpace(log))
{
Logging.Log.WriteMessage(Strings.SendMail.SendMailLog(log), LogMessageType.Profiling);
}
}
}
lastEx = null;
Logging.Log.WriteMessage(Strings.SendMail.SendMailSuccess(server), LogMessageType.Information);
break;
}
catch (Exception ex)
{
lastEx = ex;
}
}
if (lastEx != null)
{
throw lastEx;
}
}
catch (Exception ex)
{
Exception top = ex;
var sb = new StringBuilder();
while (top != null)
{
if (sb.Length != 0)
{
sb.Append("--> ");
}
sb.AppendFormat("{0}: {1}{2}", top.GetType().FullName, top.Message, Environment.NewLine);
top = top.InnerException;
}
Logging.Log.WriteMessage(Strings.SendMail.SendMailFailedError(sb.ToString()), LogMessageType.Warning, ex);
}
}
/// <summary>
/// Sends the email message
/// </summary>
/// <param name="subject">The subject line.</param>
/// <param name="body">The message body.</param>
protected override void SendMessage(string subject, string body)
{
var message = new MimeMessage();
MailboxAddress mailbox;
foreach (string s in m_to.Split(new[] { "," }, StringSplitOptions.RemoveEmptyEntries))
{
if (MailboxAddress.TryParse(s.Replace("\"", ""), out mailbox))
{
message.To.Add(mailbox);
}
}
var mailboxToFirst = (MailboxAddress)message.To.First();
string toMailDomain = mailboxToFirst.Address.Substring(mailboxToFirst.Address.LastIndexOf("@", StringComparison.Ordinal) + 1);
string from = m_from.Trim().Replace("\"", "");
if (from.IndexOf('@') < 0)
{
if (from.EndsWith(">", StringComparison.Ordinal))
{
from = from.Insert(from.Length - 1, "@" + toMailDomain);
}
else
{
from = string.Format("No Reply - Backup report <{0}@{1}>", from, toMailDomain);
}
}
if (MailboxAddress.TryParse(from, out mailbox))
{
message.From.Add(mailbox);
}
message.Subject = subject;
message.Body = new TextPart("plain")
{
Text = body, ContentTransferEncoding = ContentEncoding.EightBit
};
List <string> servers = null;
if (string.IsNullOrEmpty(m_server))
{
var dnslite = new DnsLib.DnsLite();
var dnslist = new List <string>();
//Grab all IPv4 addresses
foreach (NetworkInterface networkInterface in NetworkInterface.GetAllNetworkInterfaces())
{
try
{
foreach (IPAddress dnsAddress in networkInterface.GetIPProperties().DnsAddresses)
{
if (dnsAddress.AddressFamily == AddressFamily.InterNetwork)
{
dnslist.Add(dnsAddress.ToString());
}
}
}
catch (Exception ex) { Logging.Log.WriteExplicitMessage(LOGTAG, "DNSServerLookupFailure", ex, "Failed to get DNS servers from network interface"); }
}
dnslist = dnslist.Distinct().ToList();
// If we have no DNS servers, try Google and OpenDNS
if (dnslist.Count == 0)
{
// https://developers.google.com/speed/public-dns/
dnslist.Add("8.8.8.8");
dnslist.Add("8.8.4.4");
//http://www.opendns.com/opendns-ip-addresses/
dnslist.Add("208.67.222.222");
dnslist.Add("208.67.220.220");
}
var records = new List <MXRecord>();
foreach (var s in dnslist)
{
var res = dnslite.getMXRecords(toMailDomain, s);
if (res != null)
{
records.AddRange(res.OfType <MXRecord>());
}
}
servers = records.OrderBy(record => record.preference).Select(x => "smtp://" + x.exchange).Distinct().ToList();
if (servers.Count == 0)
{
throw new IOException(Strings.SendMail.FailedToLookupMXServer(OPTION_SERVER));
}
}
else
{
servers = (from n in m_server.Split(new string[] { ";" }, StringSplitOptions.RemoveEmptyEntries)
let srv = (n == null || n.IndexOf("://", StringComparison.OrdinalIgnoreCase) > 0) ? n : "smtp://" + n
where !string.IsNullOrEmpty(srv)
select srv).Distinct().ToList();
}
Exception lastEx = null;
string lastServer = null;
foreach (var server in servers)
{
if (lastEx != null)
{
Logging.Log.WriteWarningMessage(LOGTAG, "SendMailFailedWillRetry", lastEx, Strings.SendMail.SendMailFailedRetryError(lastServer, lastEx.Message, server));
}
lastServer = server;
try
{
using (MemoryStream ms = new MemoryStream())
{
try
{
using (var client = new SmtpClient(new MailKit.ProtocolLogger(ms)))
{
client.Timeout = (int)TimeSpan.FromMinutes(1).TotalMilliseconds;
// Backward compatibility fix for setup prior to using MailKit
var uri = new System.Uri(server);
if (uri.Scheme.ToLowerInvariant() == "tls")
{
uri = new System.Uri("smtp://" + uri.Host + ":" + (uri.Port <= 0 ? 587 : uri.Port) + "/?starttls=always");
}
client.Connect(uri);
if (!string.IsNullOrEmpty(m_username) && !string.IsNullOrEmpty(m_password))
{
client.Authenticate(m_username, m_password);
}
client.Send(message);
client.Disconnect(true);
}
}
finally
{
var log = Encoding.UTF8.GetString(ms.GetBuffer());
if (!string.IsNullOrWhiteSpace(log))
{
Logging.Log.WriteProfilingMessage(LOGTAG, "SendMailResult", Strings.SendMail.SendMailLog(log));
}
}
}
lastEx = null;
Logging.Log.WriteInformationMessage(LOGTAG, "SendMailComplete", Strings.SendMail.SendMailSuccess(server));
break;
}
catch (Exception ex)
{
lastEx = ex;
}
}
if (lastEx != null)
{
throw lastEx;
}
}
