[TriLUG] sendmail 8.11.6 virtual Host

[Joseph Tate]

Jon Carnes wrote:

> On Fri, 2003-10-03 at 08:59, Jim Ray wrote:
> 
>>>Sendmail is an smtp server which means that it shuffles mail from one
>>>place to another. If you want to download Mail, then you will need an
>>>Imap or a POP server running as well. 
>>>
>>
>>that's the part i don't understand.  so, something like exchange or wtf it is called now has both servers built into the same thingie.
> 
> 
> Yes. Exchange has multiple services running, one service moves mail from
> Point A to Point B (the smtp part), other parts allow a user to download
> or look at the Mail (services running MAPI, IMAP, or POP3).
> 
> 
>>with sendmail, do clients have a choice of using pop3, imap and/or web to access the same blob wherefor sendmail doth spew?
>>
> 
> In Unix/Linux/BSD generally you run one smtp daemon (moves the mail
> around from server to server), a local delivery agent (to move the mail
> out of smtp and into a users local mail spool), and then any number of
> other daemons that allow the user to download/look_at the mail in their
> spool.
> 
> There are some applications similar to exchange in Unix.  At least
> similar in that they act as all three parts: smtp, local delivery to
> spool, remote access to spool. Cyrus is an example of just such a
> creature:
>   http://asg.web.cmu.edu/cyrus/
> 
> The Red Hat default for a mailserver is:
>   - Sendmail (or Postfix) as the MTA, or smtp server
>   - Procmail as the local delivery agent
>   - UW-IMAP for POP or IMAP access to your local mail
> 
> Note that Procmail is not run as a daemon.  Instead it is called by
> Sendmail. When Sendmail decides that an email should be delivered to a
> local user, it runs Procmail and allows Procmail to handle the actual
> delivery of the email into the users spool.
> 
> Procmail allows the sysadmin or the users to preprocess their incoming
> mail using some simple rule-sets.
> 
> This also allows MTA's like Sendmail and Postfix to concentrate on doing
> what they do best: shuffle email across the internet.
> 
> Hope that is helpful!
> 
> Jon Carnes
> 
Having used Cyrus-imapd for some time now, it is not an MTA.  I use 
postfix with it.  It is an LDA, and an IMAP/POP3 server however, and 
contains a procmail like filtering language called Sieve.

Joseph,
Who doesn't miss procmail at all