Hi,

Is it possible to rewrite an email address that contains invalid characters?

Example: Rewrite ":[email protected]" to "[email protected]" -- 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:[email protected]
ATTENDEE;ROLE=REQ-PARTICIPANT;PARTSTAT=NEEDS-ACTION;RSVP=TRUE;CN=:MAILTO:[email protected]
ATTENDEE;ROLE=REQ-PARTICIPANT;PARTSTAT=NEEDS-ACTION;RSVP=TRUE;CN=:MAILTO:[email protected]

The bug is, that when accepting/declining the calender, the email
parsing is wrong and wants to send an email to
:[email protected] (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

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