From: John M. Troher [mailto:[EMAIL PROTECTED] On Behalf Of John M. Troher
Sent: Saturday, January 03, 2004 10:38
To: [EMAIL PROTECTED]
Subject: RE: [Modus] SMTP Connections Not Closing
Sent: Sat 1/3/2004 1:20 PM
To: '[EMAIL PROTECTED]'
Subject: [Modus] SMTP Connections Not Closing
* This is the modus mailing list *
Unfortunately I can
confirm the problem - the latest Modus seems not to
close connections on
certain conditions. I was too optimistic and updated
Modus to the latest
version before the holidays and then had to interrupt my
vacation for an
emergency recovery as our institute did not receive mail
anymore after some
time. In the error log Modus reported that the maximum
number of connections
had been reached (adjustable under Security-Connection
Limits). I opted to
automatically stop and restart services once a day so
that the number of open
connections is reset regularly, this did fix the
problem for us.
Kai
Fiebach
Musikhochschule Luebeck, Germany
http://www.mh-luebeck.de
-----Original
Message-----
From: Darryl Dunkin [mailto:[EMAIL PROTECTED]]
Sent: Saturday,
January 03, 2004 7:18 AM
To: [EMAIL PROTECTED]
Subject: [Modus] SMTP
Connections Not Closing
* This is the modus mailing list *
It
seems I've been having this problem for a few weeks and have finally
found
what the issue is, although I have no resolution (yes, I have a
message into
Vircom, but they are out for these few days). I've had to
reboot my ModusGate
(3.0 build 277, running on Win2k SP4) server twice daily
to keep it up and
running. The first sign of an issue was that there was no
mail delivery, I
could not make any outgoing TCP connections from the
server, but it was
accepting and spooling mail.
After a lot of rebooting and watching it happen
again, I found thousands of
SMTP sessions in a close_wait state to my
internal and end user e-mail
servers, such as the cropped example I pasted
below. I can free up all of
the connections by restarting Modus services. Has
anyone ever seen anything
like this? The servers are both on the same LAN
without any firewall in
between them, so I do not see why the services are
not being closed. Also, I
have Modus set to close SMTP connections after 30
seconds.
Proto Local
Address Foreign
Address State
TCP
0.0.0.0:25
0.0.0.0:0
LISTENING
TCP
0.0.0.0:80
0.0.0.0:0
LISTENING
TCP
0.0.0.0:135
0.0.0.0:0
LISTENING
TCP
0.0.0.0:445
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1025
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1026
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1027
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1028
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1029
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1030
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1031
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1032
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1033
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1034
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1035
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1036
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1037
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1038
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1039
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1040
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1041
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1042
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1043
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1044
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1045
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1046
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1047
0.0.0.0:0
LISTENING
TCP
0.0.0.0:1048
0.0.0.0:0
LISTENING
TCP 216.251.100.19:1084
216.251.100.7:25 CLOSE_WAIT
TCP 216.251.100.19:1085
216.251.100.5:25 CLOSE_WAIT
TCP 216.251.100.19:1087
216.251.100.5:25 CLOSE_WAIT
TCP 216.251.100.19:1088
216.251.100.5:25 CLOSE_WAIT
TCP 216.251.100.19:1089
216.251.100.7:25 CLOSE_WAIT
TCP 216.251.100.19:1090
216.251.100.7:25
CLOSE_WAIT
Thanks,
Darryl Dunkin
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