Date: Thu, 14 Dec 2000 10:55:48 -0600 From: "Chuck Rock" <carock@epconline.net> To: <freebsd-isp@FreeBSD.ORG> Subject: RE: sendmail NOQUEUE: Null connection from some.domain [a.b.c.d] Message-ID: <004701c065ee$b53539c0$1805010a@epconline.net> In-Reply-To: <Pine.BSO.4.10.10012131721580.7284-100000@negril.msrce.howard.edu>
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These messages pop up in my logs from my SNMP machine monitoring the status of my mail server. Someone at some.domain [a.b.c.d] may be using SNMP to monitor your mailserver for up and down status. > -----Original Message----- > From: owner-freebsd-isp@FreeBSD.ORG > [mailto:owner-freebsd-isp@FreeBSD.ORG]On Behalf Of Aaron Jackson > Sent: Wednesday, December 13, 2000 4:23 PM > To: mdickerson@officeonweb.net > Cc: freebsd-isp@FreeBSD.ORG > Subject: Re: sendmail NOQUEUE: Null connection from some.domain > [a.b.c.d] > > > Most likely Outlook is using a ms "feature" that is causing this. I have > seen this problem when clients were set to to secure connections but the > server wasn't. > > Aaron > > On Wed, 13 Dec 2000 mdickerson@officeonweb.net wrote: > > > I apologize that this is more of a sendmail question but I > thought someone > > here might know this one. > > > > We have a client that is unable to send out mail. > > He is connecting to the server (though not able to send mail) but I find > > this error in the logfile: > > > > Dec 13 08:53:51 ns1 sendmail[29411]: NOQUEUE: Null connection from > > some.domain [a.b.c.d] > > > > This is a solo entry (no other related lines in the logfile). > > > > Eratta: > > He uses Outlook. > > He uses Qwest DSL (static ip: a.b.c.d). > > We use a pop before smtp auth which works fine for our other clients. > > > > The sendmail site suggests: > > "If it happens very often, it's either someone playing around or it's a > > network problem." > > Unfortunately, this is only mildy illuminating :/. > > > > Does anyone know what is causing this or how to resolve this issue? > > > > TIA, > > > > Mike Dickerson > > OfficeOnWeb.net > > > > > > > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-isp" in the body of the message > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-isp" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message
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