Date: Wed, 18 Jul 2001 12:30:14 -0400 From: "jason" <kib@mediaone.net> To: <freebsd-questions@FreeBSD.ORG> Subject: Re: Sendmail and SASL Message-ID: <003401c10fa6$eda84420$89941bd8@speakeasy.net> References: <000d01c10f9f$ad2cdde0$89941bd8@speakeasy.net>
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A solution has come to me but I was unsure if this would work. Rather than
use these pop before smtp or other hack to get authorization can anyone tell
me if this idea is feasible?
The mail server is going to become a DNS server. And some clients will be
using a dyndns type of entry to route a domain we collect email for. I know
that sendmail will allow relay for users who have a reverse DNS that
resolves to any domain name it is setup to accept email for. This will soon
be doing its queries on a local name server which will have domain names set
dynamically for some users.
If the client uses a dyndns app to update the ip in bind before checking
email then when sendmail checks to see if the user hostname is should
resolve the one routed by our system and not the one assigned by the Dialup
ISP or Hotel LAN service provides.
Am I on the right track with this thought? Because if this is even remotely
possible I would rather go that route since it is something we will be doing
in the next several weeks.
----- Original Message -----
From: "jason" <jasonc@concentric.net>
To: <freebsd-questions@FreeBSD.ORG>
Sent: Wednesday, July 18, 2001 11:38 AM
Subject: Sendmail and SASL
> I am trying to build a mail server that can be used to send and receive
> email from anywhere on the internet. I have many user who connect from
who
> knows where from day to day and want to allow them to use a single stmp
> server to send all email.
>
> Recently I had sendmail configured to collect and distribute email for two
> domains. I had qpopper working successfully for users to have pop3 access
> to email accounts. But I was unable to find a way for sendmail to easily
> relay messages without opening a huge door for spammers.
>
> I did discover SASL and attempted to install it. It was said to allow the
> user to send login/password before relay would be permitted. This seemed
> like the perfect solution but it required a recompile of sendmail with new
> options and sendmail no longer works.
>
> I added the following lines to devtools/Sites/site.config.m4 (actually the
> file didn't exist so its the only lines in the file)
> APPENDDEF(''confENVDEF','-DSASL')
> APPENDDEF('conf_sendmail_LIBS','-lsasl')
>
> Now Sendmail refuses to answer to port 25. I redownloaded a fresh version
> and recompiled/installed and I get the same problem.
>
> ps -x doesn't list sendmail as running (my web server has it listed as:
> sendmail: accepting connections (sendmail)
>
> There are no error messages related to this problem that I can find on
> bootup at any other time that I know of.
>
> Somehow I just broke the entire thing and sort of an format and reinstall
I
> don't know where to go from here. The system is not live yet and has
> nothing of value. but before I go through the process of reinstalling BSD
I
> would like to know what I did wrong so I don't repeat this again. I am on
a
> short deadline to complete this project. I have the BSD handbook, The BSD
> Corporate Networkers Guide as well as many web resources. But when it
comes
> to sendmail they all somehow fail to detail a process to handle login
> mechanism for smtp access. I know this can be done because my dialup ISP
> used to allow me to use this and its a feature in many email programs we
use
> to enter a username/password for sending email. I just need to be able to
> provide such a service.
>
> ***Please reply to me as well as the list. So many messages come through
> this list I can't possible read them all***
>
> Thanks
> Jason Cribbins
>
>
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