email forwarding problem

[Zion Ahead]

I'm getting this email errors (cpanel box)

2007-02-28 16:36:51 1HMXPn-0005P3-Ea == user@recipient.com (user@senderlocal.com) <user@senderlocal.com> R=lookuphost T=remote_smtp defer (-53): retry time not reached for any host
2007-02-28 16:41:25 1HMXTl-0005zF-C0 => user@recipient.com (user@senderlocal.com, user@senderlocal.com) <news@senderlocal.com> F=<dont@orfa.com> P=<dont@orfa.com> R=lookuphost T=remote_smtp S=11767 H=c.mx.mail.yahoo.com [xxx.142.237.182]:25 C="250 ok dirdel" QT=28s DT=1s
2007-02-28 16:41:27 1HMXPn-0005P3-Ea => user@recipient.com (user@senderlocal.com) <user@senderlocal.com> F=<bounce-flnl-35375142@mx01.castlemountains.com> P=<bounce-flnl-35375142@mx01.castlemountains.com> R=lookuphost T=remote_smtp S=5503 H=c.mx.mail.yahoo.com [xxx.142.237.182]:-1* C="250 ok dirdel" QT=4m36s DT=1s
2007-02-28 16:41:27 1HMXOJ-0005Dm-Fg == user@recipient.com (user@senderlocal.com, user@senderlocal.com) <freeclipart@senderlocal.com> R=lookuphost T=remote_smtp defer (-46): SMTP error from remote mail server after end of data: host c.mx.mail.yahoo.com [xxx.142.237.182]: 451 Message temporarily deferred - [170]
2007-02-28 18:03:24 1HMS14-0003Bm-4T == sender@yahoo.com (sender@senderlocal.com, sender@senderlocal.com) <4030108@senderlocal.com> R=lookuphost T=remote_smtp defer (-46): SMTP error from remote mail server after end of data: host c.mx.mail.yahoo.com [xxx.142.237.182]: 451 Message temporarily deferred - [70]
2007-02-28 18:10:12 1HMYs6-0001vt-OK <= Officials@paal13.com H=(host100-113-static.41-88-b.business.telecomitalia.it) [xxx.41.113.100]:2500 I=[xxx.xxx.65.40]:25 P=esmtp S=11874 id=001001c75b96$11a5d090$00000000@4a54888895b648f T="Diapers Diaper Linette" from <Officials@paal13.com> for sender@senderlocal.com

How do I fix this?

Just now I ran...

exim_tidydb -t 1m /var/spool/exim wait-remote_smtp
exim_tidydb -t 1m /var/spool/exim retry

[duranduran]

SAME PROBLEM HERE.


2007-03-31 20:43:18 1HXnE5-0002nw-Dt SMTP error from remote mail server after end of data: host g.mx.mail.yahoo.com [206.190.53.191]: 451 Message temporarily deferred - [70]
2007-03-31 20:43:19 1HXnE5-0002nw-Dt SMTP error from remote mail server after end of data: host b.mx.mail.yahoo.com [66.196.97.250]: 451 Message temporarily deferred - [170]

[duranduran]

Hi guys... try this:

pico /etc/exim.conf

######################################################################
# RETRY CONFIGURATION #
######################################################################

# This single retry rule applies to all domains and all errors. It specifies
# retries every 15 minutes for 2 hours, then increasing retry intervals,
# starting at 1 hour and increasing each time by a factor of 1.5, up to 16
# hours, then retries every 8 hours until 4 days have passed since the first
# failed delivery.

# Domain Error Retries
# ------ ----- -------


begin retry

* quota


* rcpt_4xx F,10m,2m; F,2h,10m <<<PUT THIS LINE
* * F,2h,15m; G,16h,1h,1.5; F,4d,8h


I put this new rule (http://www.exim.org/exim-html-4.50/d....html#SECT32.3):

* rcpt_4xx F,10m,2m; F,2h,10m

and restart EXIM with

service exim restart

and works fine until this moment

[dory36]

This might make sense --

I found this buried in the middle at http://www.ahfx.net/weblog.php?article=107

-----
Yahoo implemented several MTA changes in Oct. ´06 and one of them was to limit the max. amount of messages per connection to 5. This threshold applies to all senders and there is currently no way around this measure--even for whitelisted senders/IPs. The result of this is that if you have 100 messages and your server is set to retry every 10 minutes then it will take a long time to send and usually timeout, especially under heavy amounts of email. Even if you sent no new mail to yahoo, 100 queued messages would take over 3 hours to send.
Recommendations are:

limit to 5 messages per connection(specifically to yahoo.com, if possible)(if unable, then decrease retry intervals) limit to 50 recipients per message increase of concurrent connections per IP (within reason) Hope this helps everyone!
-----


I tried manually forcing the queue repeatedly, and found that, in fact, about 5 messages get out of the queue to yahoo on each run.

Anyone else able to confirm that this is really what is happening?

Any info on the server impact of increasing the retry frequency as suggested by duranduran?

Thanks - Bill