Re: using header_checks to change message-id header
On Mon, Aug 15, 2011 at 09:30:37AM -0500, Jerico2day wrote: I'd like to have postfix dynamically change my.domain.com only on Message-Id header to some arbitrary domain that would be public-facing for all outgoing mail and change it back for incoming mail. Care to explain how you intend to guarantee the uniqueness of the message-ids? Bastian -- We Klingons believe as you do -- the sick should die. Only the strong should live. -- Kras, Friday's Child, stardate 3497.2
Re: using header_checks to change message-id header
* Peter Blair popc...@snickers.org: On Mon, Aug 15, 2011 at 10:30 AM, Jerico2day jerico2...@gmail.com wrote: I'd like to have postfix dynamically change my.domain.com only on Message-Id header to some arbitrary domain that would be public-facing for all outgoing mail and change it back for incoming mail. Unfortunately, I'm not quite sure how to do that. I would appreciate any assistance. First in your main.cf: header_checks = pcre:/etc/postfix/header_checks Secondly in your /etc/postfix/header_checks: /Message-Id:\s+(.*?)@my.domain.com/ REPLACE Message-Id: $1...@my.domain.net Warning: this might also alter Resent-Message-Id: into Message-Id:!!! /^Message-Id:\s+(.*?)@my\.domain\.com$/ REPLACE Message-Id: $1...@my.domain.net could be more robust. -- Ralf Hildebrandt Geschäftsbereich IT | Abteilung Netzwerk Charité - Universitätsmedizin Berlin Campus Benjamin Franklin Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962 ralf.hildebra...@charite.de | http://www.charite.de
Re: using header_checks to change message-id header
On Tue, Aug 16, 2011 at 2:35 AM, Ralf Hildebrandt ralf.hildebra...@charite.de wrote: * Peter Blair popc...@snickers.org: /Message-Id:\s+(.*?)@my.domain.com/ REPLACE Message-Id: $1...@my.domain.net Warning: this might also alter Resent-Message-Id: into Message-Id:!!! -1s/might/will/ Cheers! :)
Re: using header_checks to change message-id header
Thanks all for the help. I decided instead to just replace all
instances of my internal domain using the following on my gateway
server:
/^(.*?)internal\.domain\.com(.*?)/ REPLACE ${1}pretend_name.domain.com${2}
This is because it wasn't modifying the Resent-Message-Id headers.
And on my internal server I just reverse the process. It doesn't seem
to work on lines containing multiple references to my internal server,
but that doesn't really affect me as I remove the received lines
altogether when it crosses my gateway.
Anyway, thanks again for the help!
Re: using header_checks to change message-id header
On Mon, Aug 15, 2011 at 10:30 AM, Jerico2day jerico2...@gmail.com wrote: I'd like to have postfix dynamically change my.domain.com only on Message-Id header to some arbitrary domain that would be public-facing for all outgoing mail and change it back for incoming mail. Unfortunately, I'm not quite sure how to do that. I would appreciate any assistance. First in your main.cf: header_checks = pcre:/etc/postfix/header_checks Secondly in your /etc/postfix/header_checks: /Message-Id:\s+(.*?)@my.domain.com/ REPLACE Message-Id: $1...@my.domain.net Thirdly, test it: $ postmap -q Message-Id: sdfsfsdf...@my.domain.com pcre:/etc/postfix/header_checks Thanks! Note, ensure that your postfix installation supports pcre. My desktop is debian, so I call: $ apt-cache search postfix-pcre postfix-pcre - PCRE map support for Postfix
