On 6/28/2013 5:39 PM, Daniel L. Miller wrote: > Does anyone know of a tool that will let me modify the subject line > of all emails that pass through it? I would call it via a transport > map. > > My application - we just switched to a new email-to-fax service. As > part of their security implementation (THEIRS, not mine!) they > require all emails sent to them to contain our own fax number. I > want to automate this step so I don't have to hear from my users. >
http://www.postfix.org/postconf.5.html#smtp_header_checks Add this to master.cf something like this: (or if you already use a custom master.cf transport, add the -o override to that entry) # master.cf # fax_service is a copy of the smtp...smtp transport fax_service ... smtp -o smtp_header_checks=pcre:/etc/postfix/smtp_fax_header # smtp_fax_header /^Subject: / REPLACE Subject: fax from 555-1212 -- Noel Jones
