Re: sendmail blues

[Yuri Csapo <ycsapo@exchange.mines.edu>]

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Gerardo,

Thank you for your reply. It is a good idea. I just need to check if it impacts the application as 
it may be that it e-mails itself on port 25. I'll check.

Yuri

Gerardo Juarez-Mondragon wrote:
> Yuri,
> 
> Another possibility: why not configure the 'killer' MTA application to
> use other ports: 20025 instead of 25, etc. (adding 20000 to each seems
> like a good idea). After all, you don't use it. It's logical it should
> sit there, but out of the way. The other road is much more bumpy, I
> can assure you.
> 
> Gerardo
> 
> On Fri, Nov 6, 2009 at 3:54 PM, Yuri Csapo <ycsapo@exchange.mines.edu> wrote:
>> Hi all, I've an unusual (for me) problem:
>>
>> - I'm running RHEL release 3 (taroon). I know, I know. Nothing I can do -
>> it's the application vendor's requirement.
>> - This application also MUST have some Sun MTA installed and running, even
>> if we don't use it - and we don't. This MTA sits on ports SMTP, SSMTP, IMAP
>> and POP, HTTP and HTTPS and provides services to the application only, NOT
>> TO THE OS.
>> - We still need to be able to mail admin stuff such as logwatch and others.
>> RedHat comes with sendmail and we are trying to keep this box as close as
>> possible to default configuration.
>> - The sendmail queue runner by itself is not enough because I can't find a
>> way to make it expand aliases - root messages end up going to
>> root@mines.edu, which is not where I want them to go.
>> - Sendmail won't start because the silly Sun app is squatting on port 25.
>> - If I use DaemonPortOptions to tell sendmail to listen on a different port
>> then I get sendmail to start but I haven't found a way to make the queue
>> runner send to that port on localhost. The runner ends up connecting to port
>> 25, which is the Sun MTA, who proceeds to deny the connection.
>>
>> Does anybody know how to do one of the following:
>>
>> - make the sendmail queue runner expand aliases
>> - make the queue runner send to a port other than 25
>> - make sendmail behave like in the good old days and forgo the need for the
>> queue runner
>>
>> Some options that have crossed my mind but which I'm trying to avoid:
>>
>> - redirect port 25 using iptables
>> - modify sendmail's source and recompile (ugh)
>> - give up on sendmail and install exim or postfix or something that can be
>> understood by someone who hasn't read the Bat Book in the last 6 years and
>> who is not particularly inclined to read it again.
>>
>> Any other ideas?
>>
>> TIA
>>
>> Yuri
>>
>> --
>> Yuri Csapo
>> Academic Computing & Networking
>> Colorado School of Mines
>> CT-256
>> Phone:  (303) 273-3503
>> Fax:      (303) 273-3475
>> Email:   ycsapo@mines.edu
>>
>> Please use the following link to open a service request:
>> http://helpdesk.mines.edu
>> ===========================================
>> With a PC, I always felt limited
>> by the software available.
>> On Unix, I am limited only by my knowledge.
>> --Peter J. Schoenster
>>
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-- 
Yuri Csapo
Academic Computing & Networking
Colorado School of Mines
CT-256
Phone:  (303) 273-3503
Fax:      (303) 273-3475
Email:   ycsapo@mines.edu

Please use the following link to open a service request:
http://helpdesk.mines.edu
===========================================
With a PC, I always felt limited
by the software available.
On Unix, I am limited only by my knowledge.
--Peter J. Schoenster

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