From owner-freebsd-questions@FreeBSD.ORG  Fri Mar 28 10:54:13 2003
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Date: Fri, 28 Mar 2003 10:53:43 -0800
From: Victor Bondarenko <vpb@indite.org>
To: Andrey Simonenko <simon@comsys.ntu-kpi.kiev.ua>,
	FreeBSD Questions <freebsd-questions@freebsd.org>
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On Fri, Mar 28, 2003 at 10:51:06AM +0100, Martin Moeller wrote:
>     BTW, how can I check if somebody specifies me as his MX? ;-)

$ host -t mx theirdomainname.com

Will give you a list of the MX's they specified for their domain.  Of
course getting the spammers real domain is a bit more involved.

If you're still not sure if someone is relaying through your mail server:
http://www.geocities.com/spamresources/tools.htm#relay

Victor

-- 
vpb@indite.org