lda fails in parse_angle_addr if sieve is enabled

[Bernard Spil]

Hi Stephan,

Shared the message to you in person only via separate mail.

With to Return-Path, I've not seen any difference in failures, all
messages were consistently failing with the same error.

Thank you! Bernard.

2018-04-10 2:54 GMT+02:00 Stephan Bosch <stephan at rename-it.nl>:
> Op 4/8/2018 om 8:10 PM schreef Bernard Spil:
>> Hi,
>>
>> Since updating to 2.3.1 on my FreeBSD mailserver mail delivery using
>> lda is broken if I have sieve enabled.
>> (Before updating this was 2.2 and pigeonhole 0.4)
>>
>> FreeBSD 11.1-p8 amd64
>> Dovecot 2.3.1
>> Pigeonhole 0.5.1
>>
>> Mailflow is OpenSMTPd as MTA, using mda delivery to rspamc which
>> utlimately delivers using dovecot-lda.
>>
>> smtpd.conf
>> deliver to mda "rspamc -h scan --mime -e
>> \"/usr/local/libexec/dovecot/deliver -d %{user.username}\""
>> %{user.username} is the local user after virtusers, aliases etc.
>> verified using a shell wrapper and capturing the username.
>>
>> conf.d/15-lda.conf
>> protocol lda {
>>   mail_plugins = $mail_plugins sieve
>> }
>>
>>
>> Mail gets delivered.
>>
>> Don't understand why it is looking for a <>-address if sieve is enabled.
>
> I found the cause of the panic. However, what actually triggers it could
> be a little more nasty. Do you have an example of a message passed to
> dovecot-lda that causes the problem? I am particularly interested in the
> Return-Path header.
>
> Regards,
>
> Stephan.
>