topic Oubound E-Mail Problem in Operating System - Linux

Oubound E-Mail Problem

sunilgupta — Wed, 18 Apr 2007 06:53:26 GMT

I have configured exchange server setting into E-Mail settings, but the e-mails are not been relayed to destination.
how to verify that e-mails are been relayed to exchange server, and are stuck there ? or is a problem at service desk end.

Sunil

Re: Oubound E-Mail Problem

Wouter Jagers — Wed, 18 Apr 2007 07:03:05 GMT

The 'mailq' command will show you the mailqueue of your machine.. you can easily see whether or not a bunch of messages are stuck there (and you might even see the reason there).

/var/log/mail.log also states whether or not your outbound mails were 'accepted for delivery'.

Cheers
Wout

Re: Oubound E-Mail Problem

Al Licause — Wed, 18 Apr 2007 07:53:59 GMT

Some times sending a piece of mail from the command line with the -v switch (verbose) you can see if the mail has been forwarded and to which server (mail -v user@domain).

However, on linux this has proven to be less helpful.

You might want to run tcpdump and capture all traffic on port 25 (tcpdump -i eth0 -n port 25), then send a piece of mail. If it left the host, you will see just which host is went to. If not then as suggested previously, the log files should give an indication as to why they weren't sent.

This is the line in /etc/mail/sendmail.mc that you want to uncomment and supply the information about the exchange server:

dnl define(`SMART_HOST',`smtp.your.provider')

Replace the second argument with the full qualified hostname of the exchange server then recompile the sendmail.cf file and restart sendmail. Test again.....

Re: Oubound E-Mail Problem

sunilgupta — Thu, 19 Apr 2007 07:13:22 GMT

I am still facing the problem :

Here is the content of log from Service Desk Server.

Apr 18 16:40:54 ovsdtb01 sendmail[22994]: unable to qualify my own domain name (
ovsdtb01) -- using short name
Apr 18 16:40:54 ovsdtb01 sendmail[22994]: be sure to set domain name in Dj macr
o in sendmail.cf

Re: Oubound E-Mail Problem

Steven E. Protter — Thu, 19 Apr 2007 07:44:48 GMT

Shalom,

The system is not set to relay through an smtp relay server.

IS there a DS directive in sendmail.cf, if so is it valid?

Therefore it must resolve DNS itself.

The current settings in /etc/resolve.conf do not provide name resolution and perhaps there is even a firewall blocking the traffic.

/var/log/maillog contains information

in one window try:
tail -f /var/log/maillog

Then try and send the email.

Also:
sendmail -v -q

sendmail -v -d3 -d38 someone@some.net

type some text

.

You will receive a lot of diagnostics.

SEP

Re: Oubound E-Mail Problem

Steven E. Protter — Thu, 19 Apr 2007 07:46:18 GMT

One other thing I forgot is by default exchange will not accept mail relay. The exchange admin must explicitly allow this. For some reason I've found Exchange admin very reluctant to do this.

SEP