[ale] sendmail configuration

[Lightner, Jeff]

?

Maybe I misunderstood the original question.   The original question I
thought was about relaying Linux generated Sendmail to Exchange.   Such
relay is typically making an smtp connection.  When you use the
"sendmail" or "mailx" command line (as I thought you were doing) to send
mail from the Linux host to other recipients via the Exchange host then
that's all you need.   The Exchange host itself would then decide what
it needs to do to get the email to the correct mail box (e.g. to an
internal Exchange account or to external accounts which it would in turn
establish an SMTP connection to assuming it has been configured to send
email out - that is what we do here.)

IMAP, POP3 etc... are for establishing sessions directly with the mail
server and use different ports.  If you're trying to do a full mail
setup on the Linux host where it can both receive and send email that
would be a bit more complicated.   Since I don't do that here I'd have
to suggest you refer to tutorials about mail that talk about MTA, MUA
etc...

-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of
Geoffrey Myers
Sent: Wednesday, January 12, 2011 2:46 PM
To: Atlanta Linux Enthusiasts
Subject: Re: [ale] sendmail configuration

Lightner, Jeff wrote:
> By default it is port 25.  In our organization we use only port 25 and
> haven't done the SSL mentioned by someone else.

In this situation, the client is not using smtp, but mapi, can this 
still be accomplished?

> 
> -----Original Message-----
> From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of
> Geoffrey Myers
> Sent: Wednesday, January 12, 2011 10:14 AM
> To: Atlanta Linux Enthusiasts
> Subject: Re: [ale] sendmail configuration
> 
> Lightner, Jeff wrote:
>> In your sendmail.mc (typically in /etc/mail) look for line:
>> dnl define(`SMART_HOST', `smtp.your.provider')dnl
>>
>> Remove the dnl at start (this is "do not load" which essentially
>> comments out the entry).   Then replace the "smtp.your.provider" with
>> your Exchange host.
>>
>> Then run "make -C /etc/mail" - this will recreate your sendmail.cf.
>> (Note you need to have both the sendmail and sendmail.cf packages
>> installed - Sendmail by itself doesn't include the ability to make
>> Sendmail.cf.).
>>
>> As noted by Chris your Exchange server has to be configured to allow
>> connections from the Sendmail host.
> 
> Still, is it going to use port 25?
> 
>> -----Original Message-----
>> From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of
>> Christopher Fowler
>> Sent: Wednesday, January 12, 2011 9:19 AM
>> To: Atlanta Linux Enthusiasts
>> Subject: Re: [ale] sendmail configuration
>>
>> On 1/12/2011 9:08 AM, Geoffrey Myers wrote:
>>> Can sendmail be configured to use Exchange for outgoing email?
>>>
>>> Basically, I want to be able to send email from the command line on
a
>>> linux machine and the only way this can be done for this client is
> via
>>> their Exchange. server.
>>>
>> Try the smart relay option in sendmail.
>>
>> You may experience and issue where the Exchange server requires 
>> authentication of SSL.  I've written a PERL program to send mail
using
> 
>> these setups.
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-- 
Until later, Geoffrey

"I predict future happiness for America if they can prevent
the government from wasting the labors of the people under
the pretense of taking care of them."
- Thomas Jefferson
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