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Postfix Archives: Re: weird error

Re: weird error

Subject: Re: weird error
From: Adam Levin (alevinaudible.com)
Date: Wed Jan 12 2000 - 07:30:24 CST

On Tue, 11 Jan 2000, Jason Hoos wrote:
> > One of my users in Georgia is getting this:
> > "just the standard message outlook give you of "TCP?IP connection was
> > unexpectedly terminated by your mail server." It will not let me send
> > outgoing mail if I am connected via either freei or netzero, but is fine
> > with AOL or Juno."
> I haven't tried recently, but at one point some of my users were attempting
> to use NetZero to send mail (via our corporate server instead of NetZero's
> servers), and it failed miserably. Apparently they block port 25 access to
> anything but their own servers, presumably so that they can add advertising
> or whatever to outbound messages.

I know that here, a lot of employees use AT&T Worldnet. Worldnet prevents
outgoing port 25 traffic for 30 days after you open an account. This is
an attempt to stop spammers from opening a fake account, firing off spam
through someone else's open relay, and then closing the account the next
day. Maybe NetZero does the same thing permanently? Or, maybe the
account is fairly new?

-Adam
Adam Levin, Senior Unix Systems Administrator | http://www.audible.com/
Audible, Inc. The man gave a shrug which indicated that although
Wayne, NJ, USA the world did indeed have many problems, this
973-890-4070 x297 was one of them that was not his.

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