So I take it that it is just a kind of tracert. It does not complain about a bad MX in fact it says it is there, so it thinks that the pathway is complete. Problem is that the bounce can take 4 hours to get back as it keeps trying, which could take a long time to debug. Then the bounce is not very informative. I realize whatever MTA my ISP is using is only passing back what it is given, so I have tried implementing soft bounce.
I am using postfix, which evidently is better than sendmail, maybe I should use a different MTA?
Colin
|