why localhost adding in the domain name

musammil123 · 05-27-2011, 01:00 AM

Hi All,

we have installed the Centos on my server and configured the postfix with our domain (mydomain.com) as example.

If I send any email through squirrel email, Emails are going from user@localhost.mydomain.com instead of user@mydomain.com .

Can anyone please let me know why localhost is adding in the domain name.

With expecting your valuable reply

Thanks
Mohamed

EricTRA · 05-27-2011, 01:25 AM

Hello and Welcome to LinuxQuestions,

What do you have configured for the myorigin parameter in your main.cf file, do you have masquerade_domains activated and configured and what's the output of

Code:

hostname -f

Kind regards,

Eric

musammil123 · 05-27-2011, 01:31 AM

Hi Eric,

Thanks for the reply. I have assigned myorigin =$mydomain. $mydomain is mydomainname. When I type hostname -f it show my domain name.
what is masquerade_domains activated ? where I have to check it.
Thanks
Mohamed

EricTRA · 05-27-2011, 01:36 AM

Hi,

If you started from a clean main.cf, not the one that comes with the installation of Postfix, then you will not have that directive in there. If you look at the original file you'll find it. You'll have to put it in the main.cf file like this:

Code:

masquerade_domains = localhost.mydomain.com mydomain.com

where of course you have to substitute mydomain for your real domain name. After the change restart Postfix and try to send a mail to see if it takes effect.

Kind regards,

Eric

musammil123 · 05-27-2011, 02:05 AM

Hi
I have added that line and restarted the postfix. Still localhost coming.

Thanks
Mohamed

EricTRA · 05-27-2011, 02:24 AM

Hi,

Can you post your main.cf (changing private information of course)?

Kind regards,

Eric

EricTRA · 05-27-2011, 02:28 AM

Hi,

Just found something. Can you change:

Code:

masquerade_domains = localhost.mydomain.com mydomain.com

to the following:

Code:

masquerade_domains = $mydomain

exactly like that, then restart Postfix and try again.

Kind regards,

Eric

musammil123 · 05-27-2011, 02:42 AM

Hi Eric,

Thanks for the reply. Now its working fine.

once again thank you.

Thanks
Mohamed.

EricTRA · 05-27-2011, 02:45 AM

Hello,

Glad to here you've got it working! Please mark your thread as solved. Enjoy Linux.

Kind regards,

Eric