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Home » Kerio User Forums » Kerio Connect » After switch to Kerio, Mail sending doesn't work (.NET)
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Paulo

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We always used this function, it's ASP.NET v2

Quote:


public static bool SendMail(string Subject, string Body, string ToAddress)
{
System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient("xx");
MailAddress FromAddress = new MailAddress("xx", "xx");
MailAddress ToAddr = new MailAddress(ToAddress, ToAddress);
MailMessage message = new MailMessage(FromAddress, ToAddr);

message.Subject = Subject;
message.Body = Body;

client.Credentials = new System.Net.NetworkCredential("xx", "xx");
client.Send(message);
return true;
}



Since we use Kerio as Mail Demon, we get the following exception:

"Failure sending mail."
"Das Token, das der Funktion übergeben wurde, ist ungültig"

Which means something like "The token, which was delivered to the function, is invalid".

What could that be?
Thanks.
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Paulo

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It really seems to be a problem of Kerio, because all other E-Mail Demons work, please fix this..
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Pavel Dobry (Kerio)

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Please tell us what are you sending to SMTP server. It would be great if you could enable SMTP server option in the debug log in Admnistration Console to enable debug logging of SMTP server.
  •  
Paulo

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[13/Apr/2006 10:37:05][2276] {smtps} Sent SMTP greeting to xxx.xxx.xxx.xxx:62892
[13/Apr/2006 10:37:05][2276] {smtps} Command EHLO andy
[13/Apr/2006 10:37:05][2276] {smtps} Sent reply to EHLO: 250 xxxx.com ...
[13/Apr/2006 10:37:05][2276] {smtps} Command AUTH ntlm TlRMTVNTUAABAAAAB4IIogAAAAAAAAAAAAAAAAAAAAAFASgKAAAADw==
[13/Apr/2006 10:37:05][2276] {smtps} Started authentication method ntlm
[13/Apr/2006 10:37:05][2276] {smtps} Authentication aborted by client
[13/Apr/2006 10:37:05][2276] {smtps} SMTP server session end
[13/Apr/2006 10:37:09][1440] {smtps} SMTP server session end

And here's the function in MSDN:
http://msdn2.microsoft.com/en-us/library/system.net.networkc redential(VS.80).aspx

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jshaw541

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Paulo,

Just to double-check you have NTLM authentication turned on in KMS and tried NTLM authentication with KMS via some other means, right?

Does your code throw any exceptions? Seems like new NetworkCredential() should be throwing some exception.

Also, you might turn tracing on. The smtps debug logs don't seem to provide much info in this situation, except that the ASP.NET app is aborting during authentication before it sends the message.

Your code looks proper, though.

Kerio MailServer 6.7.1 w/AD
Windows Server 2003 SP 1
Dell PowerEdge 2850 (Dual Xeon 3.2ghz and 2 GB RAM)
~1300 users
~1000+ concurrent IMAPS connections
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Outlook 2007 KOFF users
Apple iCal 10.5/10.6 users
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