[Dovecot] LMTP returncode 450?

[Timo Sirainen]

On Tue, 2011-06-28 at 10:23 +0200, Peter Mogensen wrote:

> >> I can see that a lookup in the userdb is done, but now matter what I
> >> return (1/111) from my checkpassword script I just get:
> >
> > Set lmtp_proxy=yes and have passdb lookup return proxy=y and
> > host=1.2.3.4.
> 
> But how does the LMTP proxy deal with temporary errors? It has no queue 
> like the SMTP-server ?

The temporary error is proxied all the way back to the sending SMTP
server, which puts it back to its queue.