Aha! Thanks, that explains a lot. I thought I turned off the mail filtering but I guess not. So this "security" program must be mangling all SMTP sessions that do not look like Outlook - what a great "solution".
This seems consistent with the overall poor quality of the rest of the security suite. (Disclosure: program involved is Trend Micro Internet Security 2010) Thanks, Mike -----Original Message----- From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Wietse Venema Sent: Tuesday, June 08, 2010 9:32 AM To: Postfix users Subject: Re: interesting SMTP issue /w Windows + Telnet Michael Northcott: > 354 Start mail input; end with <CRLF>.<CRLF> That is not Postfix. Perhaps you are talking to some antivirus software. The Postfix response is: "354 End data with <CR><LF>.<CR><LF>". Wietse
