Sendmail connection Timed Out

[rvgprasad]

hi;
I have a redhat Advance server 2.1 with sendmail 8.11.6.9 installed. only very few of the mails are send out successfully. other mails are spooling up in mqueue with "satus =defered Connection timed out with xyz.com". If manually flushed (with sendmail -q -v ) only few mails are send out. can anyone help me in this regards.

the /var/log/maillog looklike

makeconnection (xxx.yyy.com [x.y.z.zx]) failed: Connection timed out with xxx.yyy.com

[Daniel Olson]

The server you are relaying through could be overloaded or your QoS could be doing something... If you are getting successfull sessions elsewhere, than look to network related issues.

Daniel

[Steven E. Protter]

Try this diagnostic, it will help you with the problem.

sendmail -v -d38.2 targetaddress@aol.com

You are aware of the mailq command to see if your mail is even getting on the relay server?

SEP

[U.SivaKumar_2]

Hi,

First of all find out whether your ISP link's bandwidth is overloaded . This can be done by running MRTG or looking at the interface statistics of your Internet router.

If it is overloaded , try to get the bandwidth increased by paying some money to the ISP.

As of now do this

Edit sendmail.cf file and Increase this paramter

eg:-
Present parameter:

O Timeout.connect=1m

Change it to: ( Whathever value there + 4m )

O Timeout.connect=5m

Restart sendmail daemon. Come back with results.

regards,
U.SivaKumar

[rvgprasad]

sendmail -v -d38.2 xxxuser@aol.com
seq_map_parse(aliases.files, )
hash_map_open(mailertable, /etc/mail/mailertable.db, 0)

it hangs after that. what this command actually does, and what do u mean by -d38.2. PLEASE LET ME KNOW.

I tried increasing connection timed to 5m but in vain.

Thank you

rvgp

[U.SivaKumar_2]

Hi,

HAve you checked the bandwidth usage ?

regards,

U.SivaKumar

[rvgprasad]

hi,
Can u suggest me some good MRTG software for me. I have a checkpoint NG fw on NT4. Please let me know

[U.SivaKumar_2]

Hi,

What's your ISP line Bandwidth ?.

IS your router a cisco router ?

if yes , Then can you paste the output of show interface command taken during the sendmail conection timed out error.

MRTG is a free traffic graphing perl script which uses SNMP . it can run in windows and also unix.

Follow this link.

http://people.ee.ethz.ch/~oetiker/webtools/mrtg
/

regards,

U.SivaKumar

[rvgprasad]

hi Sivakumar;
Thank u for you help. I have got some lead in my problem. If I restart the interfaces and force dequeue the mail sendmail -q -v mail are going and again stops after some time with connection timed out. I'm installing MRTG in few days time.

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-----
Oct 17 14:11:28 ns sendmail[9396]: h9H9r6c9009391: to=, ctladdr= (6116/600), delay=00:18:22, xdelay=00:18:22, mailer=esmtp, pri=30467, relay=somedomain. [xxx.xxx.xxx.xxx], dsn=4.0.0, stat=Deferred: Connection timed out with somedomain.
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