Non Delivery - Where is the Problem

[ElijahBaley]

Hello

I have been receiving quite a lot of Bounce back NDR's recently - how can I establish where the problem is
My ISP or the recipients ISP

Sometimes a mail will be gone for days until finally we will receive a NDR - the intended recipient will insist that they have been receiving there mail as normal from everyone else.

Are there some tests that I can do to work this out?

Thanks for your comments

Graham
"r tape loading error"

 

[joegz]

Can you post an example of the contents of one of your NDRs? This may help in trying to provide you with an answer.

 

[ElijahBaley]

Thanks joegz

Sorry for my previous rushed posting, I have spent a little more time looking at this, and understand a bit more about it.

It seems that a name server punt-1.mail.demon.net (Demon) is timing (451) out before resolving the recipient domain name and forwarding the mail to the account hosted by them (Demon).

Note - (We use a different ISP)

This has occured on two unrelated occaisions 1) on a private domain xxxxx.co.uk and 2) on a demon xxxxx.demon.co.uk domain

I pinged the server 212.49.220.42 yesterday and was getting unreliable results 2 out of 4 returns but it seems OK today
if I do a tracert on the above IP address I get to a diiferent server (or port ??) punt-21.mail.demon.net
in seven hops.

My original goal was to establish whether the problem was with my isp or Demon, I am pretty sure it is with Demon now and will take it up with them.

Graham



"r tape loading error"

 

[o4tn]

I use Outlook Express 6. It was working fine until recently. I did not change any settings. After logging on with my ISP and opening OE it indicates I am receiving message 1 of 12 but no messages download or appear.

I tried creating a new identity and with new mail folders but no luck. Help!