Thanks, Nick and Mr Venema, I put the following debug and command_filter in main.cf:
smtpd_command_filter = pcre:/etc/postfix/command_filter notify_classes = resource, software, protocol, policy /etc/postfix/command_filter: /^(MAIL\s+FROM:).+(<.+>)/ $1$2 In postmaster email, I got: Out: 220 qa.mycompany.com ESMTP Postfix In: HELO app01.mycompany.com Out: 250 postfix.mycompany.com In: MAIL FROM: Customer Support <do.not.re...@mycompany.com> Out: 555 5.5.4 Unsupported option: Customer It looks like the command filter did not kick in. when looked at its document, it appears available from postfix 2.7 and above. I am currently 2.3.3 and cannot upgrade it for company policy. http://www.postfix.org/postconf.5.html#smtpd_command_filter Is there a postfix config to simply disable the syntax check on MAIL FROM field? The Exim version we had before does not check it. Thanks, Steve -----Original Message----- From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Nick Sent: Monday, December 22, 2014 4:50 PM To: postfix-users@postfix.org >> Postfix users Cc: steve zeng Subject: Re: 5.5.4 Unsupported option: <supp...@mycompany.com> Hi! On 2014-12-22 7:06 PM, steve zeng wrote: > Greetings! > > We switched from Exim 4.6.3 to postfix 2.3.3 as mail relay host on RHEL 5. > We start getting report that email are rejected. We did a telnet > emulation and found that postfix reject email header as below: > > MAIL FROM: "My Company Support" <supp...@mycompany.com> > Are you sure that is indeed what is being sent? As Mr Venema (the author of Postfix) pointed out, this is not valid syntax. You might want to temporarily set notify_classes = resource, software, protocol, policy (and make sure you have an alias for the postmaster) to help track down this problem... re: http://www.postfix.org/BASIC_CONFIGURATION_README.html#notify Good luck! Nick
