Don Russell wrote:
Michael J Wise:
Don Russell:
of course the sender may be spoofed...
MAY be spoofed?
In this context, I mean the person (robot) that sent the spam may not
actually use the proper From: header, return path:, etc.
You didn't understand the full meaning of that 'MAY?'. The messages that your
recipe is going to process, practically always have spoofed sender data.
So when using EXITCODE=67 this way, *I* may send an "undeliverable"
message to someone who didn't actually send me anything. The up-side is
that will tell them some process is abusing *their* e-mail address.
No, don't do that. Backscattering will get your mail servers in DNS
blacklists, in no time.
--
Affijn, Ruud
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