mailq lockups - ReadList.com

6 msg	DSN relay host
1 msg	Restrict sender and from to one domain on outbo...
10 msg	Outbound postfix routing issue
25 msg	Problem with Black List
3 msg	Looking at new mail server layout
26 msg	why every minute: 'reload configuration /etc/po...
2 msg	myhostname parameter
17 msg	RBL problems with smarthost on private address ...
34 msg	Backscatting filter?
3 msg	how to setup postfix in 'deliver-only' mode?
7 msg	Slow queue configuration
17 msg	Some Windows SMTP Server have problems with STA...
5 msg	For each check_ns or each check_mx, the value i...
4 msg	postfix and spf
2 msg	Password Validation in postfix
4 msg	catching some spam with warn_if_reject and reje...
9 msg	RFC: Check mail quota at a mail relay (backscat...
29 msg	GPS vs GLD (greylisting)
3 msg	Unmeant update from 2.2.10 to 2.5.1

mailq lockups
\ Joey (5 May 2008)
. \ Victor Duchovni (5 May 2008)
. \ Jan P. Kessler (5 May 2008)
. \ Noel Jones (5 May 2008)
. \ Ralf Hildebrandt (5 May 2008)
. . \ Joey (5 May 2008)
. . . \ Ralf Hildebrandt (5 May 2008)
. . . \ Victor Duchovni (5 May 2008)
. . . \ Noel Jones (5 May 2008)
. . . . \ Joey (6 May 2008)
. . . . . \ Victor Duchovni (6 May 2008)
. . . . . . \ Joey (6 May 2008)
. . . . . . . \ Victor Duchovni (6 May 2008)
. \ Joey (7 May 2008)
. . \ Victor Duchovni (7 May 2008)
. . . \ Joey (8 May 2008)
. . . . \ Victor Duchovni (8 May 2008)
. . . . . \ MacShane, Tracy (9 May 2008)
. . . . . \ Joey (9 May 2008)
. . . . . . \ (Wietse Venema) (9 May 2008)
. . . . . . . \ Joey (9 May 2008)
. . . . . . . . \ (Wietse Venema) (9 May 2008)
. . . . . . \ Victor Duchovni (9 May 2008)

Subject:	mailq lockups
Group:	Postfix-users
From:	Joey
Date:	5 May 2008

Hello All,

I need some help with message that seem to get stuck in the outgoing queue
in some cases for days.

This is what I find in the log files:

May 5 10:44:48 houston postfix/smtp[5448]: 3F18D2A08A6:
to=<sixo>, relay=none, delay=177852,
delays=177852/0.03/0.09/0, dsn=4.4.1, status=deferred (connect to
myserver.server.net[28.144.16.5]:25: Connection refused)

May 5 10:44:48 houston postfix/smtp[5449]: 518A52A080A:
to=<sixo>, relay=none, delay=82012,
delays=82012/0.03/0.08/0, dsn=4.4.1, status=deferred (connect to
myserver.server.net[28.144.165.5]:25: Connection refused)

Mailq shows:

3F18D2A08A6* 6389 Sat May 3 09:20:37 hocxpx

sixo

Default Timeouts are in effect and show this:

connection_cache_protocol_timeout = 5s

daemon_timeout = 18000s

ipc_timeout = 3600s

lmtp_connect_timeout = 0s

lmtp_data_done_timeout = 600s

lmtp_data_init_timeout = 120s

lmtp_data_xfer_timeout = 180s

lmtp_lhlo_timeout = 300s

lmtp_mail_timeout = 300s

lmtp_quit_timeout = 300s

lmtp_rcpt_timeout = 300s

lmtp_rset_timeout = 20s

lmtp_starttls_timeout = 300s

lmtp_tls_session_cache_timeout = 3600s

lmtp_xforward_timeout = 300s

milter_command_timeout = 30s

milter_connect_timeout = 30s

milter_content_timeout = 300s

qmqpd_timeout = 300s

smtp_connect_timeout = 30s

smtp_data_done_timeout = 600s

smtp_data_init_timeout = 120s

smtp_data_xfer_timeout = 180s

smtp_helo_timeout = 300s

smtp_mail_timeout = 300s

smtp_quit_timeout = 300s

smtp_rcpt_timeout = 300s

smtp_rset_timeout = 20s

smtp_starttls_timeout = 300s

smtp_tls_session_cache_timeout = 3600s

smtp_xforward_timeout = 300s

smtpd_policy_service_timeout = 100s

smtpd_proxy_timeout = 100s

smtpd_starttls_timeout = 300s

smtpd_timeout = 300s

smtpd_tls_session_cache_timeout = 3600s

trigger_timeout = 10s

On the receiving exchange side timeouts are set to 120seconds, but we have
seen connections up to 10 days remain active on both the exchange server and
the postfix server.

Any help appreciated!

Joey