Re: [cobalt-users] SMTP (mail) server is not responding - different issue

[flash22@xxxxxxx]

On Fri, 20 Apr 2001, The Cathouse Central E-mail Facility wrote:
> 2. (Probably more likely)  The company were I have the RaQ housed moved
> the server and changed the IP # (no, they didn't tell me, but that's a
> 
> I checked through a recent maillog (not that i understand much of it) and
> these two errors stick out:
> Apr 14 09:45:02 www imapd[7446]: Login failure user=Active_Monitor_69
> host=localhost [127.0.0.1]
normal...ignore...

> Apr 14 11:00:19 www sendmail[10462]: gethostbyaddr(209.227.195.12)
> failed: 2
> 
> I REALLY don't like the second one because the IP# is the old one, not
> the new one assigned since the move.

log in via telnet and run  ifconfig

you probably have interfaces that still have the old IP address, which
means you have sites stuck to the old IP addresses also...

changing IP address on raq3's isn't as clean as it could be, poke around
and look for lost old addresses (particularly in mail/accept mail for
domain, relay for domain, both the name(s), and the IP(s) are in there)

> Cobalt Tech is working on this, but it is taking time.  I also have the
> hosting company verifying and sending me a copy of the DNS Zone info for
> my server.  It seems prudent that I verify the MX record.

the MX records should still be ok, they were pointing at names , which
didn't change, but make sure all the IP's got changed properly of course

> I have also gone over all the resources available to me including this
> list (and archives), sendmail.org, Cobalt knowlegdebase.  Now I feel 
> confident to ask the real experts.

The fact you even got those errors means sendmail is running, however if
it doesn't have it's primary IP address right it will be really unhappy
and refuse to do much of anything....

Don't forget to check reverse dns (IP -> domain name) also ;)

gsh