From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.6) Gecko/20050223 Firefox/1.0.1

Description of problem:
mails larger than 100kb or so are getting stuck at DATA and are sitting idly in 
/var/spool/clientmqueue but smaller size emails are being sent without probs. /v
ar/log/maillog shows a bunch of timeouts connecting to localhost but the daemon 
is definitely running on localhost on port 25. iptables is completely down. i'm 
not exactly sure what has changed with the introduction of the smmsp aside from 
sendmail running setgid instead of setuid root but i never had any probs with 8.
11 or earlier with the default config. i've compiled 8.13 on this same box and h
ave run into the same prob... ugh. in desperation i upgraded to the 2.4.21-27.0.
2 kernel and the clientmqueue flushed upon rebooting but now they're starting to
 choke again. any help would be sincerely appreciated.


Version-Release number of selected component (if applicable):
sendmail-8.12.11-4.RHEL3.1

How reproducible:
Always

Steps to Reproduce:
1. mail -s test < vacuum.log

  

Actual Results:  1. message gets stuck in /var/spool/clientmqueue
2. /var/log/maillog shows timeouts with 127.0.0.1

Expected Results:  mail should be sent successfully

Additional info:


from /var/log/maillog:

Apr 14 00:33:58 testmachine sm-msp-queue[11610]: j3AGmhm2026980: to=postgres, de
lay=3+14:35:15, xdelay=00:00:00, mailer=relay, pri=8149088, relay=[127.0.0.1], d
sn=4.0.0, stat=Deferred: Connection timed out with [127.0.0.1]
Apr 14 00:33:58 testmachine sm-msp-queue[11610]: j3ACR729002195: to=sysadmin@dom
ain.com,murray, ctladdr=postgres (503/503), delay=3+19:06:51, xdelay=
0:00:00, mailer=relay, pri=8627790, relay=[127.0.0.1], dsn=4.0.0, stat=Deferred:
 Connection timed out with [127.0.0.1]
Apr 14 00:33:58 testmachine sm-msp-queue[11610]: j39Cmfm2025894: to=postgres, de
lay=4+18:35:17, xdelay=00:00:00, mailer=relay, pri=10558309, relay=[127.0.0.1], 
dsn=4.0.0, stat=Deferred: Connection timed out with [127.0.0.1]
Apr 14 00:33:58 testmachine sm-msp-queue[11610]: j398iVPv002644: to=sysadmin@dom
ain.com,murray, ctladdr=postgres (503/503), delay=4+22:49:27, xdelay=
00:00:00, mailer=relay, pri=10947013, relay=[127.0.0.1], dsn=4.0.0, stat=Deferre
d: Connection timed out with [127.0.0.1]

[root@testmachine root]# sendmail -v -Ac -q

Running /var/spool/clientmqueue/j3DMmnm2027088 (sequence 1 of 10)
j3DMmnm2027088: locked

Running /var/spool/clientmqueue/j3DIYtTH032078 (sequence 2 of 10)
sysadmin,murray... Connecting to [127.0.0.1] via relay...
220 testmachine.domain.com ESMTP Sendmail 8.12.11/8.12.11; Thu, 14 Apr 2005 01:2
7:18 -0700
>>> EHLO testmachine.domain.com
250-testmachine.domain.com Hello localhost.localdomain [127.0.0.1], pleased to m
eet you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-8BITMIME
250-SIZE
250-DSN
250-ETRN
250-AUTH GSSAPI
250-DELIVERBY
250 HELP
>>> MAIL From:<postgres.com> SIZE=186113 AUTH=postgres@testma
chine.domain.com
250 2.1.0 <postgres.com>... Sender ok
>>> RCPT To:<sysadmin>
>>> RCPT To:<murray>
>>> DATA
250 2.1.5 <sysadmin>... Recipient ok
250 2.1.5 <murray>... Recipient ok
354 Enter mail, end with "." on a line by itself

[root@testmachine root]# ps -ef | grep sendmail | grep -v grep
root     11600     1  0 00:23 ?        00:00:00 sendmail: accepting connections
smmsp    11609     1  0 00:23 ?        00:00:00 sendmail: Queue runner@01:00:00 
for /var/spool/clientmqueue
root     11612 11600  0 00:23 ?        00:00:00 sendmail: j3E7Nw29011612 localho
st.localdomain [127.0.0.1]: DATA
root     15091 11600  0 01:01 ?        00:00:00 sendmail: j3E81oBR015091 localho
st.localdomain [127.0.0.1]: DATA
root     15095 11600  0 01:02 ?        00:00:00 sendmail: j3E822si015095 localho
st.localdomain [127.0.0.1]: DATA
smmsp    17360 11609  0 01:23 ?        00:00:00 sendmail: ./j3DMmnm2027088 [127.
0.0.1]: client DATA 354
root     17361 11600  0 01:23 ?        00:00:00 sendmail: j3E8Nw08017361 localho
st.localdomain [127.0.0.1]: DATA
root     17515 11600  0 01:27 ?        00:00:00 sendmail: j3E8RInh017515 localho
st.localdomain [127.0.0.1]: DATA

[root@testmachine root]# netstat -an | grep 25
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN

[root@testmachine root]# iptables -vnL
Chain INPUT (policy ACCEPT 1791K packets, 395M bytes)
pkts bytes target     prot opt in     out     source               destination
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target     prot opt in     out     source               destination
Chain OUTPUT (policy ACCEPT 1858K packets, 435M bytes)
pkts bytes target     prot opt in     out     source               destination

[root@testmachine mail]# egrep -v "^#" /etc/mail/access
localhost.localdomain           RELAY
localhost                       RELAY
127.0.0.1                       RELAY

[root@testmachine mail]# grep -i "max.*message.*size" /etc/mail/sendmail.cf
# maximum message size
#O MaxMessageSize=1000000

[root@testmachine mail]# grep -i "max.*message.*size" /etc/mail/submit.cf
# maximum message size
#O MaxMessageSize=1000000

[root@testmachine etc]# egrep "local|testmachine" /etc/hosts
127.0.0.1       localhost.localdomain localhost
10.0.2.23       testmachine.domain.com         testmachine

[root@testmachine etc]# egrep hosts /etc/nsswitch.conf
hosts:      files dns