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In conjunction with Microsoft Exchange we have a weird failure (every time) of mailman.SendEmail: The function returns false and the SmtpSessionLog ends with a totally correct "250 2.1.0 Sender OK":

220 remote.amondo.de Microsoft ESMTP MAIL Service ready at Tue, 8 Oct 2013 12:05:57 +0200 EHLO HERKULES 250-remote.amondo.de Hello [] 250-SIZE 104857600 250-PIPELINING 250-DSN 250-ENHANCEDSTATUSCODES 250-STARTTLS 250-AUTH 250-8BITMIME 250-BINARYMIME 250 CHUNKING MAIL FROM:postmasterrz1xto4s.1y2@amondo.de 250 2.1.0 Sender OK

Any idea why that response to MAIL FROM is considered wrong?

Best regards,


asked Oct 08 '13 at 10:51

clausc's gravatar image


Please post the contents of the mailman.LastErrorText for the SendEmail method call. If using an older version of Chilkat, 9 times out of 10 the problem has already been fixed..


answered Oct 08 '13 at 11:45

chilkat's gravatar image

chilkat ♦♦

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Asked: Oct 08 '13 at 10:51

Seen: 3,148 times

Last updated: Oct 08 '13 at 11:45

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