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
> --
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--
Catalin Constantin
Dazoot Software
http://www.dazoot.eu/
