Help with Active Directory and Linux servers

[LuckyTaxi]

I have a few linux servers in our environment. We have an Active Directory setup for our network for out 40+ workstations. I'm having issues sending mail from our Redhat box.
Our mail server is outsourced via a third party company that handles our Exchange mailboxes. I have no control over the server.

On my RH box, I have the DNS pointed to the PDC's IP since this is the Primary DNS due to AD's wishes. I CAN ping anything internally and externally but sending mail craps out. Running nslookup/dig on domainname.com shows the internal IP (which is the PDC's IP).
I think this is where the issue is. I tried changing the nameservers in /etc/resolv.conf but then I won't be able to ping the workstations/servers on my LAN.

Makes sense?

 

[cleverhandle]

Originally posted by: lilcam
I CAN ping anything internally and externally but sending mail craps out.

"Craps out" how? Does the mail get to the SMTP server and then bounce back or is there not even a connection? What do the mail logs on the RH box say?

Running nslookup/dig on domainname.com shows the internal IP (which is the PDC's IP). I think this is where the issue is.

Because... ? It's not clear what you think the problem is. Are you digging on an A record or an MX record? Is the PDC the/an MX host for the domain?

I tried changing the nameservers in /etc/resolv.conf but then I won't be able to ping the workstations/servers on my LAN.

And did changing the nameservers help with the mail problem? If so, then it sounds like you've simply got a screwed-up MX entry in your DNS, though I'd have thought Active Directory would've already choked on something like that before now.

Makes sense?

No, not really.

 

[Allanv]

did you add the linux box ip address to the allowed to relay options on the exchange box?