On 2013-08-01 10:13, Ian wrote:
Phil Stewart said:
Interestingly, I'm starting to see
greylisting become less effective
as an anti-spam technique.
That's interesting. I'm not noticing any increase in spam getting
through, and the logs still show an awful lot not getting past greylisting.
There are some 'genuine' senders who don't either because their mail
servers don't resend the mail, but these tend to be the ones who don't
accept postmaster@ email either, sigh.
Ian
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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...
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