/// <summary>Adds alternate views to the <paramref name="mailMessage"/>.</summary>
/// <param name="mailMessage">The message to which the alternate views should be added.</param>
/// <param name="body">The message body.</param>
/// <param name="bodyEncoding">The encoding of the message body.</param>
internal static void AddAlternateView(MailMessage mailMessage, string body, Encoding bodyEncoding)
{
// added support for multipart html messages
// add text part as alternate view
var plainView = AlternateView.CreateAlternateViewFromString(Mail.ConvertToText(body), bodyEncoding, "text/plain");
mailMessage.AlternateViews.Add(plainView);
if (mailMessage.IsBodyHtml)
{
var htmlView = AlternateView.CreateAlternateViewFromString(body, bodyEncoding, "text/html");
mailMessage.AlternateViews.Add(htmlView);
}
}
private static MimeMessage CreateMailMessage(MailInfo mailInfo, SmtpInfo smtpInfo)
{
var mailMessage = new MimeMessage();
mailMessage.From.Add(ParseAddressWithDisplayName(displayName: mailInfo.FromName, address: mailInfo.From));
if (!string.IsNullOrEmpty(mailInfo.Sender))
{
mailMessage.Sender = MailboxAddress.Parse(mailInfo.Sender);
}
// translate semi-colon delimiters to commas as ASP.NET 2.0 does not support semi-colons
if (!string.IsNullOrEmpty(mailInfo.To))
{
mailInfo.To = mailInfo.To.Replace(";", ",");
mailMessage.To.AddRange(InternetAddressList.Parse(mailInfo.To));
}
if (!string.IsNullOrEmpty(mailInfo.CC))
{
mailInfo.CC = mailInfo.CC.Replace(";", ",");
mailMessage.Cc.AddRange(InternetAddressList.Parse(mailInfo.CC));
}
if (!string.IsNullOrEmpty(mailInfo.BCC))
{
mailInfo.BCC = mailInfo.BCC.Replace(";", ",");
mailMessage.Bcc.AddRange(InternetAddressList.Parse(mailInfo.BCC));
}
if (!string.IsNullOrEmpty(mailInfo.ReplyTo))
{
mailInfo.ReplyTo = mailInfo.ReplyTo.Replace(";", ",");
mailMessage.ReplyTo.AddRange(InternetAddressList.Parse(mailInfo.ReplyTo));
}
mailMessage.Priority = ToMessagePriority(mailInfo.Priority);
// Only modify senderAddress if smtpAuthentication is enabled
// Can be "0", empty or Null - anonymous, "1" - basic, "2" - NTLM.
if (smtpInfo.Authentication == "1" || smtpInfo.Authentication == "2")
{
// if the senderAddress is the email address of the Host then switch it smtpUsername if different
// if display name of senderAddress is empty, then use Host.HostTitle for it
if (mailMessage.Sender != null)
{
var senderAddress = mailInfo.Sender;
var senderDisplayName = mailInfo.FromName;
var needUpdateSender = false;
if (smtpInfo.Username.Contains("@") &&
senderAddress == Host.HostEmail &&
!senderAddress.Equals(smtpInfo.Username, StringComparison.InvariantCultureIgnoreCase))
{
senderAddress = smtpInfo.Username;
needUpdateSender = true;
}
if (string.IsNullOrEmpty(senderDisplayName))
{
senderDisplayName = Host.SMTPPortalEnabled ? PortalSettings.Current.PortalName : Host.HostTitle;
needUpdateSender = true;
}
if (needUpdateSender)
{
mailMessage.Sender = ParseAddressWithDisplayName(
displayName: senderDisplayName,
address: senderAddress);
}
}
else if (smtpInfo.Username.Contains("@"))
{
mailMessage.Sender = ParseAddressWithDisplayName(
displayName: Host.SMTPPortalEnabled ? PortalSettings.Current.PortalName : Host.HostTitle,
address: smtpInfo.Username);
}
}
var builder = new BodyBuilder {
TextBody = Mail.ConvertToText(mailInfo.Body),
};
if (mailInfo.BodyFormat == MailFormat.Html)
{
builder.HtmlBody = mailInfo.Body;
}
// attachments
if (mailInfo.Attachments != null)
{
foreach (var attachment in mailInfo.Attachments.Where(attachment => attachment.Content != null))
{
builder.Attachments.Add(attachment.Filename, attachment.Content, ContentType.Parse(attachment.ContentType));
}
}
// message
mailMessage.Subject = HtmlUtils.StripWhiteSpace(mailInfo.Subject, true);
mailMessage.Body = builder.ToMessageBody();
return(mailMessage);
}
/// <inheritdoc />
public override string SendMail(MailInfo mailInfo, SmtpInfo smtpInfo = null)
{
// validate smtp server
if (smtpInfo == null || string.IsNullOrEmpty(smtpInfo.Server))
{
if (string.IsNullOrWhiteSpace(Host.SMTPServer))
{
return("SMTP Server not configured");
}
smtpInfo = new SmtpInfo
{
Server = Host.SMTPServer,
Authentication = Host.SMTPAuthentication,
Username = Host.SMTPUsername,
Password = Host.SMTPPassword,
EnableSSL = Host.EnableSMTPSSL,
};
}
var mailMessage = new MimeMessage();
mailMessage.From.Add(ParseAddressWithDisplayName(displayName: mailInfo.FromName, address: mailInfo.From));
if (!string.IsNullOrEmpty(mailInfo.Sender))
{
mailMessage.Sender = MailboxAddress.Parse(mailInfo.Sender);
}
// translate semi-colon delimiters to commas as ASP.NET 2.0 does not support semi-colons
if (!string.IsNullOrEmpty(mailInfo.To))
{
mailInfo.To = mailInfo.To.Replace(";", ",");
mailMessage.To.AddRange(InternetAddressList.Parse(mailInfo.To));
}
if (!string.IsNullOrEmpty(mailInfo.CC))
{
mailInfo.CC = mailInfo.CC.Replace(";", ",");
mailMessage.Cc.AddRange(InternetAddressList.Parse(mailInfo.CC));
}
if (!string.IsNullOrEmpty(mailInfo.BCC))
{
mailInfo.BCC = mailInfo.BCC.Replace(";", ",");
mailMessage.Bcc.AddRange(InternetAddressList.Parse(mailInfo.BCC));
}
if (!string.IsNullOrEmpty(mailInfo.ReplyTo))
{
mailInfo.ReplyTo = mailInfo.ReplyTo.Replace(";", ",");
mailMessage.ReplyTo.AddRange(InternetAddressList.Parse(mailInfo.ReplyTo));
}
mailMessage.Priority = (MessagePriority)mailInfo.Priority;
// Only modify senderAddress if smtpAuthentication is enabled
// Can be "0", empty or Null - anonymous, "1" - basic, "2" - NTLM.
if (smtpInfo.Authentication == "1" || smtpInfo.Authentication == "2")
{
// if the senderAddress is the email address of the Host then switch it smtpUsername if different
// if display name of senderAddress is empty, then use Host.HostTitle for it
if (mailMessage.Sender != null)
{
var senderAddress = mailInfo.Sender;
var senderDisplayName = mailInfo.FromName;
var needUpdateSender = false;
if (smtpInfo.Username.Contains("@") && senderAddress == Host.HostEmail &&
!senderAddress.Equals(smtpInfo.Username, StringComparison.InvariantCultureIgnoreCase))
{
senderAddress = smtpInfo.Username;
needUpdateSender = true;
}
if (string.IsNullOrEmpty(senderDisplayName))
{
senderDisplayName = Host.SMTPPortalEnabled ? PortalSettings.Current.PortalName : Host.HostTitle;
needUpdateSender = true;
}
if (needUpdateSender)
{
mailMessage.Sender = ParseAddressWithDisplayName(displayName: senderDisplayName, address: senderAddress);
}
}
else if (smtpInfo.Username.Contains("@"))
{
mailMessage.Sender = ParseAddressWithDisplayName(
displayName: Host.SMTPPortalEnabled ? PortalSettings.Current.PortalName : Host.HostTitle,
address: smtpInfo.Username);
}
}
var builder = new BodyBuilder
{
TextBody = Mail.ConvertToText(mailInfo.Body),
};
if (mailInfo.BodyFormat == MailFormat.Html)
{
builder.HtmlBody = mailInfo.Body;
}
// attachments
if (mailInfo.Attachments != null)
{
foreach (var attachment in mailInfo.Attachments.Where(attachment => attachment.Content != null))
{
builder.Attachments.Add(attachment.Filename, attachment.Content, ContentType.Parse(attachment.ContentType));
}
}
// message
mailMessage.Subject = HtmlUtils.StripWhiteSpace(mailInfo.Subject, true);
mailMessage.Body = builder.ToMessageBody();
smtpInfo.Server = smtpInfo.Server.Trim();
if (!SmtpServerRegex.IsMatch(smtpInfo.Server))
{
return(Localize.GetString("SMTPConfigurationProblem"));
}
try
{
var smtpHostParts = smtpInfo.Server.Split(':');
var host = smtpHostParts[0];
var port = 25;
if (smtpHostParts.Length > 1)
{
// port is guaranteed to be of max 5 digits numeric by the RegEx check
port = int.Parse(smtpHostParts[1]);
if (port < 1 || port > 65535)
{
return(Localize.GetString("SmtpInvalidPort"));
}
}
// to workaround problem in 4.0 need to specify host name
using (var smtpClient = new SmtpClient())
{
smtpClient.Connect(host, port, SecureSocketOptions.Auto);
switch (smtpInfo.Authentication)
{
case "":
case "0": // anonymous
break;
case "1": // basic
if (!string.IsNullOrEmpty(smtpInfo.Username) &&
!string.IsNullOrEmpty(smtpInfo.Password))
{
smtpClient.Authenticate(smtpInfo.Username, smtpInfo.Password);
}
break;
case "2": // NTLM (Not Supported by MailKit)
throw new NotSupportedException("NTLM authentication is not supported by MailKit provider");
}
smtpClient.Send(mailMessage);
smtpClient.Disconnect(true);
}
return(string.Empty);
}
catch (Exception exc)
{
var retValue = Localize.GetString("SMTPConfigurationProblem") + " ";
// mail configuration problem
if (exc.InnerException != null)
{
retValue += string.Concat(exc.Message, Environment.NewLine, exc.InnerException.Message);
Exceptions.Exceptions.LogException(exc.InnerException);
}
else
{
retValue += exc.Message;
Exceptions.Exceptions.LogException(exc);
}
return(retValue);
}
}