We've just moved from running Mercury under Netware to Mercury32 on Windows and have quit using our ISP for forwarding outbound mail. Most of our mail is working swimmingly, however, we're seeing a small percentage of message failures where the MAIL FROM: line has a SIZE=0 suffix and the response from the receiver's mail system is 501 Invalid arguments.
Here's an example:
12:38:51.906: --- Tue Apr 08 12:38:51 2008 ---
12:38:51.015: Connect to '18.104.22.168', timeout 60.
12:38:52.015: >> 220 bay0-mc3-f21.bay0.hotmail.com Sending unsolicited commercial or bulk e-mail to Microsoft's computer network is prohibited. Other restrictions are found at http://privacy.msn.com/Anti-spam/. Violations will result in use of equipment located in Califo
12:38:52.015: << EHLO mail.cherokeeporcelain.com<cr><lf>
12:38:53.296: >> 250-bay0-mc3-f21.bay0.hotmail.com (22.214.171.124) Hello [126.96.36.199]<cr><lf>
12:38:53.296: >> 250-SIZE 29696000<cr><lf>
12:38:53.296: >> 250-PIPELINING<cr><lf>
12:38:53.296: >> 250-8bitmime<cr><lf>
12:38:53.296: >> 250-BINARYMIME<cr><lf>
12:38:53.296: >> 250-CHUNKING<cr><lf>
12:38:53.296: >> 250-AUTH LOGIN<cr><lf>
12:38:53.312: >> 250-AUTH=LOGIN<cr><lf>
12:38:53.312: >> 250 OK<cr><lf>
12:38:53.312: << MAIL FROM:<Vicki@cherokeeporcelain.com> SIZE=0<cr><lf>
12:38:53.765: >> 501 Invalid arguments<cr><lf>
12:38:53.812: << QUIT<cr><lf>
12:38:53.062: >> 221 bay0-mc3-f21.bay0.hotmail.com Service closing transmission channel<cr><lf>
12:38:53.062: --- Connection closed normally at Tue Apr 08 12:38:53 2008. ---
Most of these problems involve MSN/Hotmail addresses, though we're seeing it with some other addresses as well.
Our configuration is a Netware network with ~10 users running PMail 4.41, SMTPMAIL directory on the Novell server (where it originally was with MERCNDS). Mercury32 4.52 on a Windows XP system.
I've been digging through the forum looking for a hint as to what we can do to resolve the problem but I don't recognize anything that fits. Any help with this is greatly appreciated.