On 18/12/2020 01:19, Philip Paeps via mailop wrote:
I use the secondary MX as spammerbait... If a client connects to a
lower priority MX before talking to the higher priority MX, I probably
don't want to hear from them.
There's also the opposite anti-spam trick that I've heard of:
have two MX records. The higher priority MX just doesn't exist and the
real mail server is the lower priority one. Badly written spam software
will try the higher one and when that doesn't respond, it'll give up.
Well written mail senders try the higher one, then use the lower one
when the higher one doesn't respond.
https://en.wikipedia.org/wiki/Nolisting
--
Paul
Paul Smith Computer Services
supp...@pscs.co.uk - 01484 855800
--
Paul Smith Computer Services
Tel: 01484 855800
Vat No: GB 685 6987 53
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