Pigeonhole Sieve Vacation Reply-To peculiarity with inbound AWS-SES

[Dr. Rolf Jansen]

> Am 08.02.2023 um 08:37 schrieb Stephan Bosch <stephan at rename-it.nl>:
> 
> https://doc.dovecot.org/settings/pigeonhole-ext/vacation/#pigeonhole_setting-sieve_vacation_send_from_recipient
> 
> On 7-2-2023 15:01, Dr. Rolf Jansen wrote:
>> To begin with, usage of Amazons Simple Email Service (SES) is mandatory for outgoing mails from AWS-EC2 instances. The Pro is, it does work and we may utilize email relays with high reputation for our outgoing mails at no additional costs. The Con's are that (A) SES does not relay mails with empty <> MAIL FROM addresses and (B) it fiddles with the envelope addresses of the relayed mails.
>> 
>> Anyway this is out of our control, and while I could avoid (A) by switching the e-mail service provider, I still have no control over (B) because this affects replying to emails from others using AWS-SES.
>> 
>> Problem A) The empty-MAIL-FROM may be effectively addressed by setting Pigeonhole’s sieve_vacation_send_from_recipient to ‚yes‘.

Yes that’s important for resolving problem A, and I wrote this already (s. above).

Without my patch, problem B remains unresolved, though.

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