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Maniphest T1543

Undeliverable mail because of duplicated Sender header
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Description

When sending an iTip reply as a delegatee of the event invitee I got in a reply from the server:

The message WAS NOT relayed to:
  <test2.test@example.org>:
   554 5.6.0 bounce, id=26465-07 - bad header

This nondelivery report was generated by the program amavisd-new at host
kolab.example.org. Our internal reference code for your message is
26465-07/3uZqARq-cfif

INVALID HEADER

  Duplicate header field: "Sender"

I confirmed with SMTP debug that the send mail does not contain the duplicate. It contained only one Sender:

Sender: "Manager, Jane" <jane.manager@example.org>

However, the error report says the message headers was:

...
Sender: jane.manager@example.org
...
Sender: "Manager, Jane" <jane.manager@example.org>
...

I guess the duplicate was added by smtp access policy module. Maybe it just does not handle Sender address with name correctly?

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Event Timeline

machniak created this task.Sep 28 2016, 12:55 PM
machniak added a comment.Sep 29 2016, 11:23 AM

The headers are indeed added by smtp access policy and come from:

[kolab_smtp_access_policy]
delegate_sender_header = True
alias_sender_header = True
sender_header = True
xsender_header = True

Problem is that Roundcube already set X-Sender and Sender headers.

So, first, maybe the default should be to disable these options. Second, how to fix this functionality?

  • We could remove Sender and X-Sender in header_checks I suppose,
  • Another option would be to move this functionality to some content filter, but my postfix knowledge is not good enough,
  • Add configuration options to Roundcube to not set Sender/X-Sender.
matthias.huetter subscribed.Dec 19 2016, 7:19 AM
machniak assigned this task to vanmeeuwen.Jul 20 2017, 11:57 AM
machniak added a subscriber: vanmeeuwen.

@vanmeeuwen Does https://git.kolab.org/rP0e8a8276f60b4cf99ef37d9e3b413153d80bcd98 fix this or we plan another solution?

vanmeeuwen added a comment.Jul 21 2017, 10:54 AM
In T1543#38255, @machniak wrote:

@vanmeeuwen Does https://git.kolab.org/rP0e8a8276f60b4cf99ef37d9e3b413153d80bcd98 fix this or we plan another solution?

That does fix the problem.

vanmeeuwen removed vanmeeuwen as the assignee of this task.Jul 21 2017, 10:55 AM
machniak closed this task as Resolved.Jul 21 2017, 10:58 AM
machniak claimed this task.