Sendmail sending as host.domain.com, I want it to be from just domain.com, How do I configure?

Currently, after I setup the sendmail, the emails are going as user@host.domain.tld (or user@host.domain.com) instead of user@domain.tld (or user@domain.com). How do I configure the sendmail so that the mails reach as user@domain.tld?

Answer:

Edit /etc/mail/local-host-names or create a /etc/mail/local-host-names if you do not have one

Add yourdomain.com like this as your first entry and have the other hosts from the next lines

This is not sufficient. You need to check and entry in /etc/hosts that the first entry yourdomain.com (notesbit.com) with 127.0.0.1 and other entries afterwords.

Restart Sendmail

check the system with sample email

Or wherever you want to test the email

References:
http://www.faqs.org/docs/securing/chap22sec180.html
http://www.freebsd.org/doc/en/books/handbook/sendmail.html
http://www.linuxquestions.org/questions/linux-software-2/sendmail-sending-as-host.domain.com-i-want-it-to-be-from-just-domain.com.-177447/

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