Sendmail 8.13 on RHEL 4

mks_jangra · 02-22-2008, 04:55 AM

Hi

We are using Sendmail version 8.13.1 on RHEL 4 and facing mailing problem

Currently, all emails are sent from the mail server in the following
format : UserName@MyServer.MydomainName.com

i.e root@ggns1dev04.hsc.com

We need to have all emails sent using the correct format of :

(UserName@MydomainName.com) i.e root@hsc.com
------------------------------------------------------------------------

Here is mail -v command output

mahesh.sharma@hsc.com... Connecting to [IPAddress_Remote_SMTP_Server] via relay...
220 "HostName_Remote_SMTP_Server".in ESMTP
>>> EHLO "MyServer.MydomainName.com"
250-"HostName_Remote_SMTP_Server"
250-8BITMIME
250 SIZE 10485760
>>> MAIL From:<Root@MyServer.MydomainName.com> SIZE=61
250 sender <Root@MyServer.MydomainName.com> ok
>>> RCPT To:<maheshs@yahoo.com>
250 recipient <maheshs@yahoo.com> ok
>>> DATA
354 go ahead
>>> .
250 ok: Message 2463711 accepted
maheshs@yahoo.com... Sent (ok: Message 2463711 accepted)
Closing connection to [IP_Address]
>>> QUIT

------------------------------------------------------------------------
Could you let me know how can I make the switch please in sendmail ?

Thanks for support in advanced

Thanks & Regards
Mahesh

TB0ne · 02-22-2008, 08:50 AM

I don't know the commands for editing the .mc file and running it through the m4 processor (as you really should do), but if you edit your sendmail.cf file, look for the Dj directive. It may be commented out now. If so, make it read:

Dj mydomain.com

You can also try masquerading, with the DM directive, but that needs more than one directive, and you really need to do that through the .mc file.

Check out the documentation:

http://www.sendmail.org/

frndrfoe · 02-22-2008, 10:11 AM

You should have a line in your sendmail.mc like this:

Code:

MASQUERADE_DOMAIN(`example.com')

then:

Code:

# make -C /etc/mail
# service sendmail restart

assuming you have sendmail.cf installed, the make will fail if you don't have the configuration tools installed.

mks_jangra · 02-25-2008, 03:54 AM

Both the option are not working

frndrfoe · 02-25-2008, 04:17 PM

try

Code:

>>> MAIL From:<Root@MydomainName.com> SIZE=61

instead of

Code:

>>> MAIL From:<Root@MyServer.MydomainName.com> SIZE=61

vedang · 02-25-2008, 11:25 PM

If your mails are going out as user@hostname.domain.com

Then the receiver cannot reply back to you as his mail server cannot find dns record of your mail server. So it must be as user@domain.com

Typically for sendmail 8.13.1 in RHEL4 there are two lines already present in the sendmail.mc configuration file as

dnl # LOCAL_DOMAIN(`localhost.localdomain')dnl
LOCAL_DOMAIN(`vvdesign.com')dnl

dnl # MASQUERADE_AS(`mydomain.com')dnl
MASQUERADE_AS(`vvdesign.com')dnl

two commented lines are for masquerading. Use as per your domain name.
Then use

#m4 /etc/mail.sendmail.mc > /etc/mail/sendmail.cf

And never edit sendmail.cf file manually.

Then restart the sendmail service and observe. It will definitely work But let me know.

mks_jangra · 02-27-2008, 02:16 AM

1. Still problem is same all the mails are going out as user@hostname.domain.com

2. That is OK we want to send the mail as user@domain.com only . Don't want to receiver the reply back.

Thanks
Mahesh

vedang · 02-27-2008, 03:10 AM

If you try to send a mail with command prompt with

mail -v user@example.com

it will show you fqdn with hostname in mail id of the user if you send any mail from command prompt.

try configuring outlook and try sending a mail through it. It will be delivered with domain nmae only.

i.e. user@example.com

and try sending a reply. Observer if you receive that mail or it bounce back. Letr me know the output of it. I will guide you to solve the problem.