Re: [exim] sender verify at verizon.net (sigh)

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Autor: Kevin Smith
Datum:  
To: exim-users
Betreff: Re: [exim] sender verify at verizon.net (sigh)
Thomas Bushnell BSG <tb@???> wrote:
> "Larry Rosenman" <ler@???> writes:
>
> > Turning off IDENT in addtition to the no_enforce_sync seems to fix it for
> > me,
> > FWIW.
>
> Ah, wonderful! I owe you a beer. This does fix the problem for me.


I'm running exim 4.14.

Reducing rfc1413_query_timeout from 30s to 20s worked for me.

It seems that when verizon connects back to me to validate the sender,
we do the ident callout on the connection. Their validation servers
don't respond to or reject the ident so we delay the 30 seconds till
the ident times out. By then, their validation server has given up and
has rejected the original connection.

By reducing the ident timeout to 20 seconds all seems to work.

The alternative would be to not ident for verizon.net hosts

rfc1413_hosts = ! 206.46.252.0/24

Verizon seems to cache validations. Once I successfully sent a message
(after reducing the ident timeout), verizon quit checking back.

-- 
Do two rights make | Kevin Smith, ShadeTree Software, Philadelphia, PA, USA
a libertarian      | 001-215-487-3811  shady,com,kevin