Re: [suse-security] is it a spam relay?

Hello, On Fri, Jan 19, 2001 at 04:44:53PM +0100, webmaster wrote:

Please, help me understand this log: Jan 19 06:51:06 mand sendmail[2353]: GAA02353: ruleset=check_mail, arg1=, relay=[12.110.33.133], reject=501 ... Sender domain must exist

the name server1.ssdcn.net can't be resolved (no reverse resolution). Your sendmail daemon doesn't accept mails from such senders. Probably it is a problem in a missconfigured MTA or MUA at server1. This host is not listet in the DNS Database at ssdcn.net so the owner of this machine should set the DM string in /etc/sendmail.cfto ssdcn.net to force masquerading his hostname. I don't think it is a span relay. P.S. Sorry for my bad english Greetings, Frank -- Hi! I'm the infamous .signature virus! Copy me into your ~/.signature to help me spread!