topic sendmail - masquerading with no dns problem in Operating System - HP-UX

sendmail - masquerading with no dns problem

Emanuele_4 — Tue, 11 Jan 2005 07:45:24 GMT

Hi everybody, I've a problem with sendmail.

I have to send mail to an external mail server (smtp.it.XXXX.com) but this server can accept only mail from YYYY@XXXX.com.

All our UX server send mail with sendmail like YYYY@hostname.XXXX.com so...we're not able to send mail.

So far I did:

1) sendmail.cf
DMXXXX.com
Dj$w.XXXX.com
CE commented

2) Restarted sendmail
3) verified with sendmail -v zzzz@XXXX.com
i Got:
HOSTNAME:/etc/mail# sendmail -v pippo.baudo@XXXX.com
XXXX.com: Name server timeout
pippo.baudo@XXXX.com... Transient parse error -- message queued for future delivery

4) verified nnswitch.conf which contains:
hosts: files dns
5) file resolv.conf not present because we ar not using dns but only hosts file.

in host file we have every server...and the smtp server too. I can ping smtp.it.XXXX.com from everywhere thanks to hosts file.

I think the problem is about the fully qualified name...or the XXXX.com which is not known from the server...

Does anybody have an idea?
Thanks in advance

Re: sendmail - masquerading with no dns problem

RAC_1 — Tue, 11 Jan 2005 08:01:58 GMT

Did you try as follows.

mailx -s "Subject" -r "YYYY@XXXX.com" "to_adress"

also you may want to try -f option of sendmail so that mail sent looks like it is sent from YYYY@XXXX.com

Anil

Re: sendmail - masquerading with no dns problem

Emanuele_4 — Tue, 11 Jan 2005 08:21:45 GMT

I tried your command but it seems that it's not working fine:

after the command I run mailq and find out:

j0BDFdw14181 0 Tue Jan 11 14:15 ema@XXXX.com
(host map: lookup (XXXX.com): deferred)
pippo.baudo@XXXX.com

The command was:
mailx -s "prova mailx" -r "ema@XXXX.com" "pippo.baudo@XXXX.com" < file

Re: sendmail - masquerading with no dns problem

Mark Greene_1 — Tue, 11 Jan 2005 09:57:12 GMT

Verify your sendmail.cf setup with:

mailq -d -v

(the domain info will be at the end of the display)

Then try this to get better debug info:

sendmail -v -d0 -d1 -d0.4 -d1.5 -d2 -d6 -d6.5 -d10 -d11 -d30 -d45 pippo.baudo@XXXX.com maildebug.log 2>&1

make sure to have the "testmail" file created with something to send, and do this from a directory with sufficient space to create the maildebug.log file; it may be as much as a couple of meg.

mark

Re: sendmail - masquerading with no dns problem

Sanjay_6 — Tue, 11 Jan 2005 10:23:59 GMT

Hi,

Reset your sendmail configuration to what it was before and then try Anil's suggestion,

mailx -s "Subject" -r "YYYY@XXXX.com" "to_adress"

Here YYYY@XXXX.com is a vaild email address, could be your own official email address. and XXXX.com is a valid domain.

Hope this helps.

Regds

Re: sendmail - masquerading with no dns problem

Steven E. Protter — Tue, 11 Jan 2005 10:32:50 GMT

Suggestion:
hostname.XXXX.com

Make it a valid DNS entry in your DNS server that is pointed to in /etc/resolv.conf

Create the server on the UX box and add DNS re cords to support your environment. You need not change nsswitch.conf

Then the mail will get delievered.

You could also use smtp relay in sendmail.cf

DShostname.relayserver.com

or

DS
[ip address]

save sendmail.cf

/sbin/init.d/sendmail stop
/sbin/init.d/sendmail start

SEP

Re: sendmail - masquerading with no dns problem

Emanuele_4 — Tue, 11 Jan 2005 10:34:13 GMT

thank you very much for your suggestion...I think we are getting closer to resolv the problem.

The log file is in attach but I'm thinking there could be a problem with the Dj parameter in the sedmail.cf file.

I have
Dj$w.domain.com
where I think $w is the hostname

so I already tried to put
Djdomain.com
but it doesn't work

Re: sendmail - masquerading with no dns problem

Mark Greene_1 — Wed, 12 Jan 2005 09:33:40 GMT

Coment the Dj entry. You only need to have the correct IP and host name and fully qualified host name in your /etc/hosts file and sendmail should derive all that just fine.

mailq -v -d to verify once you've made the changes.

mark