Problems recieving mail from badly configured hosts
The trouble is they bounce any message that isn't immediatly deliverable, after only one attempt. They refuse to look at any backup MX records, or queue for any retries…. As far as I'm aware this is completly the opposite to what the relevent RFCs say.
What I'd like to know, is has anyone had any luck contacting postmasters about this sort of thing - my impression is they won't be too interested that 0.01% of their mail, which is generally of a personal nature anyway is bouncing back. Everyone I know who works for them swears they never have a problem e-mailing anyone but people I handle mail through, but given what a grossly stupid configuration this is I find that hard to believe…
Anyway, any thoughts?
Heck, if anyone is using greylisting, they'll be bouncing left and right.
Do you know what MTA they're using?