Re: [exim] retry configuration

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Autor: Catalin Constantin
Data:  
Dla: exim-users
Temat: Re: [exim] retry configuration
Hi,

I'm not 100% sure the greylisting per sender / recipient is done by Yahoo.
Nevertheless this is not the issue here (trying out to figure out what
Yahoo is doing).

The problem is Exim when:
- sending lots of emails to the same destination domains.

Exim is no retrying fast enough when the remote destination smtp
server is doing aggressive
greylisting (temporary defers).

What i see in the logs (even after i did the changes suggested by Bill
Hacker) is:
- attempts for the first 10 - 15 messages from the queue to be delivered
- after that 1000 lines with @yahoo.com R=dnslookup T=remote_smtp
defer (-53): retry time not reached for any host

The reason for this is because the /var/spool/exim/db/retry database
uses as key the domain / hostname, for remote smtp transfer instead of
the
full recipient address.

Changing it in the configuration (retry_use_local_part) does not work
because it's not implemented (according to the docs).

On Tue, Apr 21, 2009 at 11:23 AM, Heiko Schlittermann
<hs@???> wrote:
> Hello Catalin,
>
> You're absolutly sure about the greylisting on per sender/recipient
> base?
>
> That is, what I get from one of my machines (I never used this machine for
> outgoing mail):
>
> root@hh:~# swaks -f hs@??? -t abc@??? -q rcpt
> === Trying f.mx.mail.yahoo.com:25...
> === Connected to f.mx.mail.yahoo.com.
> <** 421 Message from (213.128.132.49) temporarily deferred - 4.16.50.
> Please refer to http://help.yahoo.com/help/us/mail/defer/defer-06.html
> -> QUIT
> *** Remote host closed connection unexpectedly.
>
> About 5 minutes later it would work:
>
> root@hh:~# swaks -f hs@??? -t abc@??? -q rcpt
> === Trying e.mx.mail.yahoo.com:25...
> === Connected to e.mx.mail.yahoo.com.
> <-  220 mta114.mail.re4.yahoo.com ESMTP YSmtp service ready
>  -> EHLO hh.is.schlittermann.de
> <-  250-mta114.mail.re4.yahoo.com
> <-  250-8BITMIME
> <-  250-SIZE 31981568
> <-  250 PIPELINING
> -> MAIL FROM:<hs@???>
> <-  250 sender <hs@???> ok
> -> RCPT TO:<abc@???>
> <-  250 recipient <abc@???> ok
> -> QUIT
> <-  221 mta114.mail.re4.yahoo.com
> === Connection closed with remote host.
>
>    Best regards from Dresden/Germany
>    Viele Grüße aus Dresden
>    Heiko Schlittermann
> --
>  SCHLITTERMANN.de ---------------------------- internet & unix support -
>  Heiko Schlittermann HS12-RIPE -----------------------------------------
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--
Catalin Constantin
Dazoot Software
http://www.dazoot.eu/