dear Michael
I asked you a while ago on how to block entire TLDs from accepting e-mail. You
suggested the an entry in /etc/mail/access like, for *.icu domains:
icu 550 Mail rejected from junk TLD (with a TAB between icu and 550)
I first thought it would work only for three letter TLDs, not for domains like
*.best or *faith and sent a notice last week.
But actually it *does* work for any TLD regardless of its length — I had a mess
in my configurations, sorry.
Just wanted to let you know.
Thank you and best regards
_⌢_ Meaulnes Legler
'¿') Zurich, Switzerland.
`-´ +41¦0 44 260-1660
On 17.10.19 18:06, Michael Stauber wrote:
Hi Meaulnes,
you told me how to block entire TLD's: edit /etc/mail/access and put
this line into it:
icu 550 Mail rejected from junk TLD (with a TAB between icu and 550)
I did this and inserted also other TLDs.
icu 550 Mail rejected from junk TLD
pro 550 Mail rejected from junk TLD
best 550 Mail rejected from junk TLD
top 550 Mail rejected from junk TLD
That works for .icu, .pro, .top, but not for the four letter *.best*
TLD, e-mails from such domains are still pouring into the Mail Delivery
Subsystem...
Hmmm ... I'm not sure I have an answer to that at the moment, sorry.
Next week I'll be doing an overhaul of the AV-SPAM for 5210R and the new
code will then also be backported to the 5209R AV-SPAM. The Milter-GeoIP
in there will receive some code that I've been running myself for the
last year. That new code allows to block certain TLDs at the MTA level
via the milter.
It also does WHOIS lookups and you can block domains that are freshly
registered or can block domains that have been registered with
registries you don't like.
I once added that because a particularly annoying spammer was using
throw away hosting accounts and was cycling through >200 GoDaddy
registered domains he had lined up for that. Once I had identified this
behavior I could say: "If registered at GoDaddy and the last change is
newer than 7 days: Go away!"
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