Thanks Alexandro,
(I've removed the MDN request from this message!)
In message <4A48E8CC(_dot_)60700(_at_)tana(_dot_)it>, Alessandro Vesely <vesely(_at_)tana(_dot_)it>
writes
[]
Yes, in part. They should also state that no bounces (or any message
without a MAILFROM) are ever sent from that host. I think they have
turned out backscatter for any message that will result to be
undeliverable after having been accepted by mail4.ukisp.com from
external sources, but it may be a good idea to ask for more details.
I have informed them of your comments.
As an aside, even if they didn't "need" an SPF record, would there be
any resource or other implications for them if they had an unnecessary
SPF record?
As a marginal case, a check could be missed from internal sources. What
happens to undeliverable messages that you send? If you write to
unexisting-user(_at_)existing-domain, your message may make its way to mail4
and only there be found to be undeliverable. In that case, a bounce
would be generated with a helo name that misses an SPF record, thereby
producing an output of "none" if the internal receiver runs SPF
checking against its MX, or your client might discard it on a similar basis.
A "none" output is pretty benign isn't it?
I tried sending a message to kjahwbbceffhjvcbihevh(_at_)googlemail(_dot_)com (I
chanced that there is no such address) and got the bouncer back.
--
Best regards
Harvey Coward
Slough Mortgage Centre - In your best interest. ®
Mortgages & Loans. Conveyancing. Debt Management.
Life, Critical Illness, Income Protection, Buildings & Contents Insurance.
Abbey House, 18-24 Stoke Road, Slough SL2 5AG
Tel: 01753 516567
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remains virus free once sent.
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