mail issue - ispcp-arpl.domain.name ?

[bpratt]

Now this might not be an issue for most people, I've got a guy who runs Mac's in his office, and today he's been sending email inter-office and has been getting his emails bounced back to him.

the mail.log shows -

Sep 23 12:51:38 admin postfix/smtp[2085]: DEB4D1009EC: to=<brian@ispcp-arpl.xxx.com.au>, orig_to=<brian@xxx.com.au>, relay=none, delay=12, delays=2/0/10/0, dsn=5.4.4, status=bounced (Host or domain name not found. Name service error for name=ispcp-arpl.xxx.com.au type=A: Host not found)


So far this client is the only one experiencing these problems with his mail going out.

He's also reporting that he's not getting emails today either, as his clients are telling him that they are bouncing, but sadly won't give me any more details than that, but I'm guessing emails getting out are appearing with "ispcp-arpl" in the domain name section, and when replied to are coming up with the above DNS issue.

Thanks for any help/suggestions.