Re: [exim] Sender verification, permanent vs. transient erro…

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Szerző: Stephen Gran
Dátum:  
Címzett: exim-users
Tárgy: Re: [exim] Sender verification, permanent vs. transient error codes
On Thu, Jan 25, 2007 at 10:06:48AM -0800, Eric Messick said:
> On 1/25/07, Stephen Gran <steve@???> wrote:
> >
> > The problem is apparently that, while you responsibly return icmp
> > unreachable for auth queries, they silently drop them, leaving you
> > reprobing them for auth before sending a greeting. This whole process
> > takes more than 30 seconds, so they tear down the conversation and
> > tempfail your mail.
>
> That sounds like an excellent theory. The only question I have is: why
> don't I see outgoing auth queries in the conversation?


You do:
> > 18  2.258134    198.144.198.191       209.51.152.98         TCP 4501 > auth [SYN] Seq=0 Ack=0 Win=5840 Len=0 MSS=1460 TSV=78345610 TSER=0 WS=0
> > 19  5.250159    198.144.198.191       209.51.152.98         TCP 4501 > auth [SYN] Seq=0 Ack=0 Win=5840 Len=0 MSS=1460 TSV=78345910 TSER=0 WS=0
> > 20  11.250251   198.144.198.191       209.51.152.98         TCP 4501 > auth [SYN] Seq=0 Ack=0 Win=5840 Len=0 MSS=1460 TSV=78346510 TSER=0 WS=0
> > 21  23.250406   198.144.198.191       209.51.152.98         TCP 4501 > auth [SYN] Seq=0 Ack=0 Win=5840 Len=0 MSS=1460 TSV=78347710 TSER=0 WS=0


> I'll look into probing them on auth, and trying to stomp them on my end, and
> see if that helps.


That sounds like a good plan.
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