Qmail allow email from my own domain (particular domain) only

by nixcraft · 2 comments

Q. How do I allow receiving email from my own domain only? I am using Qmail mail server software under Fedora Core Linux.

A. You can change the behavior of the qmail system by modifying qmail's control files. This is essential as you do not want to become a source of open mail relay. By default qmail will not relay. However every persons need is different. You can force qmail to accept domain listed rcphosts file only.

Open file /var/qmail/control/rcpthosts

# vi /var/qmail/control/rcpthosts

And append your domain name to accept email. Here is my sample file from my own box:

nixcraft.com
cyberciti.org
cyberciti.biz
theos.in
gite.in

Save the file. And restart qmail.

From the qmail man page, "Allowed RCPT domains. If rcpthosts is supplied, qmail-smtpd will reject any envelope recipient address with a domain not listed in rcpthosts. Exception: If the environment variable RELAYCLIENT is set, qmail-smtpd will ignore rcpthosts, and will append the value of RELAYCLIENT to each incoming recipient address. rcpthosts may include wildcards:
.nixcraft.com

Envelope recipient addresses without @ signs are always allowed through."

Featured Articles:

Want to read Linux tips and tricks, but don't have time to check our blog everyday? Subscribe to our daily email newsletter to make sure you don't miss a single tip/tricks. Subscribe to our weekly newsletter here!

{ 2 comments… read them below or add one }

1 Sunil 03.16.07 at 10:01 am

How do I allow receiving email from my own domain to particular user only? I am using Qmail mail server software under Fedora Core Linux.

2 kuyaninja 08.18.08 at 5:07 am

my domain is abc.com and now my domain is zxc.com how do i change qmail default domain..? [qmail in 1 server]

Leave a Comment

You can use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>

Previous FAQ:

Next FAQ:

nixCraft FAQ PDF Collection Now Available To All