Date: Fri, 28 Sep 2001 03:08:08 -0700 (PDT) From: "Timothy J. Luoma" <luomat@peak.org> To: mshaber@awaretech.com Cc: freebsd-questions@FreeBSD.ORG Subject: Re: What does 'NOQUEUE: Null connection from <ip/domain>' mean? Message-ID: <3374.24.136.36.40.1001671688.squirrel@emh.peak.org> In-Reply-To: <5.0.2.1.2.20010927142546.02a15e80@mail.awaretech.com> References: <5.0.2.1.2.20010927142546.02a15e80@mail.awaretech.com>
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> What exactly does "NOQUEUE: Null connection from <ip/domain>" mean? I > have seen these entries in my maillog infrequently, and I am concerned > that someone may be trying to compromise my system. I think it happens when someone connects to your machine and tests whether or not it will relay mail not to your domain. Try this: telnet localhost 25 helo there mail from:<test@aol.com> rcpt to:<test@msn.com> (I may have the mail and rcpt lines reversed). Sendmail should then say something like "relaying denied" at which point you will control ] out of sending the mail, and check the log... I bet you see the same error. TjL To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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