On 18/11/02 17:51 +0530, Yashpal Nagar wrote:
> Hi Linuxians,
>    I have one of my friend using MS exchange 5.5 , I suggest him to make 
> change overs to Linux with sendmail. Now when he to make these change overs, 
> He found  few challenges viz
> 
> 1. He is having around 300 users , How do he need to make changes so that all 
> passwords etc remains same so that no one even get noticed of change over.

What does Exchange maintain the password database in? A LDAP like
directory? Move to OpenLDAP. Otherwise sniff the network and get
everyones password.
 
> 2. M$ exchange sucks every email quickly while sending emails(Say to 500 
> users)  even with any mail to non existent domain say 
> [EMAIL PROTECTED] But when i try with sending such mails with 
> sendmail box it gives MX record problem to users itself. Which they don't 
> want they want any notification later on.

DeferDNSLookups is what you want maybe (IIRC, possible foot in mouth,
since I have given up sendmail for a long time)?

<snip>
> Can anyone help me in the tunning of sendmail for such kind of setup. Me sure 
> that sendmail /qmail can perform well than any M$ exchange.
> Please help !

Did you consider postfix?
http://www.postfix.org/

My personal experience is that postfix defaults are much faster than
sendmail defaults, and that sendmail requires more skill to maintain
than postfix (you don't want anyone looking at sendmail.cf).

Devdas Bhagat


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