Postfix 2.6.5 address rewiting: removing invalid characters from email addresses
in [Postfix]
|
Prev: hold queue management
Next: Postfix 2.6.5 address rewiting: removing invalid characters from email addresses
From: Bernd Nies on 16 Apr 2010 09:59 Hi, Is it possible to rewrite an email address that contains invalid characters? Example: Rewrite ":user(a)domain.com" to "user(a)domain.com" -- stripping of the leading ":" (colon). I read through the Postfix Address Rewriting README [1] but did not find a hint. Source routing looks close but that's not it. Using header_checks [2] with REDIRECT is also not very useful because I have to create such an entry for every possible email address. Background info: We're currently having a problem with Zimbra Collaboration suite 6.0.5 and Thunderbird Lightning 1.0b1. Calendar invitations from a customer contain an empty CN= field in the organizer and attendee fields as follows: ORGANIZER;CN=:MAILTO:organizer(a)exchangeuser.com ATTENDEE;ROLE=REQ-PARTICIPANT;PARTSTAT=NEEDS-ACTION;RSVP=TRUE;CN=:MAILTO:bernd(a)zimbrauser.com ATTENDEE;ROLE=REQ-PARTICIPANT;PARTSTAT=NEEDS-ACTION;RSVP=TRUE;CN=:MAILTO:otherguy(a)zimbrauser.com The bug is, that when accepting/declining the calender, the email parsing is wrong and wants to send an email to :organizer(a)exchangeuser.com (yes, with the leading colon). This email address is rejected on the customer's email server. I thought about using Postfix on our outbound SMTP gateway for stripping off the leading ":" from the destination address. Thanks in advance. Best regards, Bernd [1] http://www.postfix.org/ADDRESS_REWRITING_README.html [2] http://www.postfix.org/header_checks.5.html
From: Wietse Venema on 16 Apr 2010 10:59
Bernd Nies: > Hi, > > Is it possible to rewrite an email address that contains invalid characters? > > Example: Rewrite ":user(a)domain.com" to "user(a)domain.com" -- stripping > of the leading ":" (colon). > > I read through the Postfix Address Rewriting README [1] but did not > find a hint. Postfix address rewriting is based on table lookup, therefore you can use any Postfix lookup table for address rewriting. Documentation: http://www.postfix.org/pcre_table.html http://www.postfix.org/canonical.5.html Example: /etc/postfix/main.cf: canonical_maps = pcre:/etc/postfix.canonical.pcre /etc/postfix.canonical.pcre /^:(.+@example\.com)$/ $1 Wietse |