smtp relay, reconfigure new mail server

[Todd McDaniel_1]

Hi,

I have a client who just recently changed their email server and I was wondering what I needed to do to be able to route mail to the new exchange server from my HPUX 11.0 boxes. I have searched everywhere and cant find the old configuration for the old exchange server.

Does it even exist on my box or is there some external place that their new server needs to be reconfigured?

Their mail times out and gets queued on my unix box... However, I can send mail to myself and it goes on a different exchange server than the one they used to use.

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stat=Deferred: Connection timed out with xxxxxxx.xxx.com.
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sorry I'm sort of a newb on this smtp relay stuff.

[Ivan Krastev · Accepted solution]

Check for DS entry in your sendmail.cf file.
It should be something like:
DSsmtp.server.com


regards,
ivan

[George_Dodds]

From memory you could check in the sendmail.cf file, there should be a entry in there for the old exchange server that will need chamged.

[Todd McDaniel_1]

Mine only has DS and thats it. I guess I need to add the full exchange server name there?

[Tim Nelson]

If the server is NOT configured to smart relay everything using DS macro it may be as simple as an MX record update in DNS.

Test:

nslookup
>server localhost
>set type=mx
>yourcompany.com

Review the returned MX lookups. If they are coorect for the new server then prob is not here. If they are incorrect then get somebody to update DNS correctly.

example:
set type=mx
> yahoo.com
Name Server: nagrna1-ntdns1.dom1.onyxna.net
Address: 172.20.1.10

Trying DNS
Non-authoritative answer:
yahoo.com preference = 1, mail exchanger = g.mx.mail.yahoo.com
yahoo.com preference = 1, mail exchanger = a.mx.mail.yahoo.com
yahoo.com preference = 1, mail exchanger = b.mx.mail.yahoo.com
yahoo.com preference = 1, mail exchanger = c.mx.mail.yahoo.com
yahoo.com preference = 1, mail exchanger = d.mx.mail.yahoo.com
yahoo.com preference = 1, mail exchanger = e.mx.mail.yahoo.com
yahoo.com preference = 1, mail exchanger = f.mx.mail.yahoo.com

Authoritative answers can be found from:
a.mx.mail.yahoo.com internet address = 209.191.118.103
c.mx.mail.yahoo.com internet address = 216.39.53.3
c.mx.mail.yahoo.com internet address = 216.39.53.2
f.mx.mail.yahoo.com internet address = 68.142.202.247
f.mx.mail.yahoo.com internet address = 209.191.88.247

[Todd McDaniel_1]

I used the DS and Dj entries...

I assigned the relay to the DS entry and defined my other domain as the DJ entry.

Thanks all for your help!