On 15.11.2013, at 0.25, Michael Grimm <[email protected]> wrote:

> Michael Grimm <[email protected]> wrote:
> 
>> I noticed as well, that some of my addresses lead to unusual rejections 
>> never anticipated before:
> 
> That had been post 2.2.7 (775b1e025939):
> 
>> postfix/lmtp[1234]: 3dFbVw2NVmz6SL: to=<[email protected]>, 
>> relay=mx1.example.com[private/dovecot-lmtp], delay=0.04, 
>> delays=0.03/0/0/0.01, dsn=4.4.2, status=undeliverable (lost connection with 
>> mx1.example.com[private/dovecot-lmtp] while sending MAIL FROM)
> 
> IMHO, it had been introduced by revision 10c0aae82d0d.

Hmm. What if you get the latest version and just reverse this one change? I 
won’t see any obvious reason why it would change this, but I guess it could be 
possible in less obvious ways. Is this reproduceable, i.e. are all of these 
Postfix checks always failing or just rarely or most of the time or ..? And was 
this only with the Postfix user existence check or were LMTP deliveries in 
general failing?

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