[95724] in RedHat Linux List
Re: Email (sorry - again)
daemon@ATHENA.MIT.EDU (Chuck Mead)
Tue Oct 20 18:08:05 1998
Date: Tue, 20 Oct 1998 18:06:17 -0400 (EWT)
From: Chuck Mead <chuck@moongroup.com>
To: redhat-list@redhat.com
In-Reply-To: <000e01bdfc74$e5c2d9c0$5a1c4d0c@computer>
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
On Tue, 20 Oct 1998, Anthony S. Nixon wrote:
> Thanks a bunch! Did the trick. Is there any way to allow my users to send
> email through my server (relay) without using relay_allow? I can use
> ip_allow, but they are all on different ISPs with different addresses. I
> could use 12. or 192. in the file, but this would let all users with
> 12.X.X.X etc. in. Anything else I can do to keep this secure? Maybe allow
> only logged in users to relay? Thanks for the info.
>
There are only two acceptable ways to do this that I know of. One is
to use POP before SMTP (I do not know how to do this because I do it
the other way!). The other is to tell the users to use your
machine's name for POP3 and their dial-up provider's MTA for SMTP.
There is a third way and that is to do what you mention above but be
a bit more restrictive. Do it by ISP domain name instead of IP
block.
What version of sendmail are you running?
--
Chuck Mead, CEO - Moongroup Consulting, Inc. <chuck@moongroup.com>
http://www.moongroup.com/
http://www.moongroup.com/unix/
Q: What's tiny and yellow and very, very, dangerous?
A: A canary with the super-user password.
--
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