[CentOS] Recommend Mail Server

Les Mikesell lesmikesell at gmail.com
Tue Nov 24 04:37:00 UTC 2009

Christopher Chan wrote:
> >     
>> How do you have a remote root exploit if you aren't running as root?
> Ask the sendmail advisories for 8.12.x.

Wasn't the last bug found and fixed 5 or 6 years ago?

>>> I fail to see how that becomes an advantage for sendmail. 
>> It lets you control load very precisely.  You can limit sendmail to some number 
>> of instances that can be much larger than the number of big/slow scanning 
>> backend processes that you permit and the sendmails don't wait for the milters 
>> until/unless they need one of their functions and you don't have to start a new 
>> process for each message.
> Sorry, I meant to say, an advantage for sendmail over postfix.

I've been using it with sendmail for many years.  Postfix has only recently 
added milter support and only very recently made it good enough to work with 
mimedefang.  I don't know if it does the session multiplexing as efficiently - 

> You know the answer to that one. If I am going to use MimeDefang for 
> spamassassin and postfix obviously does not have anti-virus features 
> (unless you call using body_checks to check for known patterns 
> anti-virus support) where do you think I would plug in anti-virus 
> support? Again, in a sendmail + mimedefang versus postfix + mimedefang, 
> sendmail is the loser.

If you just started to use email, perhaps.

>> On the contrary, having the ability to extend through external software gives 
>> you unlimited options.  Note that postfix eventually got around to copying this 
>> feature.  Also with mimedefang you can do most of your special configuration in 
>> perl instead of having to learn yet another syntax.
> Simply because it made sense to use available existing tools that 
> support spamassassin and virus scanners than make yet another interface. 
> No more smtp proxying. Good riddance amavisd. postfix was after all a 
> replacement for sendmail and it would be incomplete without milter support.

And it was incomplete for a long time.  Which is why sendmail is the standard.

   Les Mikesell
    lesmikesell at gmail.com

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