Can't send or receieve emails

[davebesag]

Early this morning I noticed that I hadn't received an email on webmail that I'd forwarded to myself or a confirmation from an company for something I had just bought. I then tried sending an email to my Idnet email address from a couple of other email accounts I have and nothing was being received.

I then tried sending an email from my Idnet webmail and always got for example "SMTP Error (450): Failed to add recipient "support@idnet.net" (4.1.8 <dave@besag.co.uk>: Sender address rejected: Domain not found)." This wasn't an issue yesterday. The domain looks fine on who.is and doesn't expire until next year.

[Simon]

No problems here with sending or receiving.  Do you still have the issue now?

[davebesag]

Thanks,

Yes. Idnet are passing it to their domain team but unfortunately they only work Mon-Fri. I've also contacted 123-reg as well. I've noticed that the nameservers on 123-reg point to Netnames (who I used to use) rather than 123-reg but that wouldn't explain why it is suddenly a problem today.

By the way I've just now received a test email I sent from another email address. I'm wondering whether changing the nameservers worked.

[davebesag]

I can suddenly send emails although I'm not sure all test emails I sent from other are arriving (Yahoo Mail is a possible issue). This is all very odd.