Hi,
Just to add my recent experience to this useful
thread. Yahoo seem to be
the toughest, I currently have an old domain with correct PTR records
and SPF set up which simply gets dropped by Yahoo's servers. I get a
warning regarding delayed delivery then a day or so later a failed
delivery error.
The domains that are successfully getting through to Yahoo have DKIM set
up too (although I don't think this always needs to be the case).
I have just filled out this form which I am told can help:
http://help.yahoo.com/l/us/yahoo/mail/postmaster/bulkv2.html;_ylt=An8jLP5eP…
we'll see...
When I first set up my mail relay I got this "delayed delivery" message
when trying to inject mail into Yahoo. The URL for the form appears in
the error message (which appears in your logs so it should be almost
impossible to miss).
I had to fill it in a number of time over the first few months but
perseverance seemed to work.
...knocks on wood.
Regards,
@ndy
--
andyjpb(a)ashurst.eu.org
http://www.ashurst.eu.org/
0x7EBA75FF