I am kinda new to postfix Would I use the following line in my main.cf? smtp_discard_ehlo_keyword_address_maps = 175.21.0.67
Carver Banks ____________________ Vesta Corporation 11950 SW Garden Place Portland, OR 97223 Direct: (503) 552-4045 Mobile: (503) 679-6363 -----Original Message----- From: Noel Jones [mailto:njo...@megan.vbhcs.org] Sent: Friday, February 13, 2009 10:03 AM To: Carver Banks; postfix-users@postfix.org Subject: Re: Protocol error: host said: 250 2.0.0 Ok (in reply to DATA command) Carver Banks wrote: > Hello Everyone, > I am seeing weird bounces on my postfix server and can't quite figure out > why... > It looks like it is failing while passing the mail off to a spam appliance, > but from the spam appliance side I see no record of the message. Also > > Any ideas, I have a couple examples below? > > Example Mail.log entry: > > Feb 12 06:17:53 mail01 postfix/smtp[24220]: C06165CE92: > to=<user.n...@domain.com>, relay=175.21.0.67[175.21.0.67]:2525, conn_use=18, > delay=16, delays=1.4/13/0/1.7, dsn=5.5.0, status=bounced (Protocol error: > host 175.21.0.67[175.21.0.67] said: 250 2.0.0 Ok (in reply to DATA command)) > The SMTP protocol has gotten out of sync. Often this is caused by a poor PIPELINING implementation on the receiver. You can disable postfix PIPELINING with smtp_discard_ehlo_keywords or only for that destination using smtp_discard_ehlo_keyword_address_maps http://www.postfix.org/postconf.5.html#smtp_discard_ehlo_keywords The above is really just a guess (although a pretty good one). If it doesn't help or you want to definitely diagnose the problem you'll need to post a packet capture to the list covering a time period when the error occurs. http://www.postfix.org/DEBUG_README.html#sniffer -- Noel Jones
