Email's bounce back on second machine

Hen_Dawg

Hen_Dawg

Hen_Dawg

Soldato
Joined
3 Dec 2006
Posts
2,919
Location
Brisbane, Australia
Hi

My mother has just got a new laptop and I've set it all up with Thunderbird like they have already on their desktop. Emails are received just fine but when I send any they immediately bounce back with the warning
Reporting-MTA: dns; mk-outboundfilter-5.mail.uk.tiscali.com

Final-Recipient: rfc822;[email protected];
Action: failed
Status: 5.0.0 (permanent failure)
Diagnostic-Code: smtp; 5.1.2 - Bad destination host 'DNS Hard Error looking up hotmail.com; (MX): NXDomain' (delivery attempts: 0)
Click to expand...
As far as I can see I've copied exactly the email settings from the desktop, servers, ports etc so I'm completely stumped as to what could be the issue.
I've been on hotmail for about a decade so don't know too much about POP3 emails and so on. May be something very obvious.
Any ideas?
 
What DNS server is she using, looks like it cant resolve hotmail.com or rather cant find the MX record.
 
J.B said:
What DNS server is she using, looks like it cant resolve hotmail.com or rather cant find the MX record.
Click to expand...
It would more appear that Tiscali's SMTP server can't resolve it.

I'd double check the outgoing/SMTP settings, particularly if any authentication is used on the original PC.
 
They're on the dreadful Pipex so whatever DNS they have. I've tried to send to a couple of addresses without luck though.
Guess trying OpenDNS is worth a go. Not sure what else though but I was thinking of her getting a second mailbox and trying that
 
Hen_Dawg said:
They're on the dreadful Pipex so whatever DNS they have. I've tried to send to a couple of addresses without luck though.
Guess trying OpenDNS is worth a go.
Click to expand...
Her PC doesn't do any of the resolving, The outgoing SMTP server will do that. And that's what's failing.

If she's on Pipex, why are you using the Tiscali SMTP?
 
I'm guessing that the SMTP server is not actually a single server but at least 2 servers with a round round DNS to resolve the address to an IP and one of those servers is having DNS resolution problems of it's own.

That would account for why 1 machine work and 1 wouldn't.

If your PCs use DNS resolvers directly (ie you don't resolve via your router) then try opening a command prompt and type "ipconfig /flushdns" without the quotes and try again. You may get the IP for the working SMTP server.
 
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