[lug] sendmail startup

Hugh Brown hugh at vecna.com
Wed Oct 31 08:10:50 MST 2001


I asked before looking.  Maybe this will be of some use to everyone.

It turns out that sendmail in RH defaults to do ident lookups.  If you are
hitting a mail server from behind a firewall that just drops the packets,
you have to wait for it to timeout.  So you can reconfigure your firewall
to reject identd packets or you can be lazy and put 


define(`confTO_IDENT', 0s)

in your sendmail.mc file pass it through m4 and it stops doing ident
lookups.

Chagrined at answering his own post,

Hugh

"rm at fabula.de"
> 
> On Wed, Oct 31, 2001 at 09:43:02AM -0500, Hugh Brown wrote:
> > I have a mail server that starts up rather slowly (on the order of 20-30
> > seconds).  Any ideas on why it would take so long?  It is on a high speed
> > connection on both ends.
> > 
> Hmmm, that sounds like it _could_ be a name resolution problem.
> You could try to do a packed dump with tcpdump or ethereal and observe
> the DNS traffic.
> Just a quick guess.
> 
>  Ralf Mattes



More information about the LUG mailing list