On Sat, 28 Dec 2024 01:17:38 +0000, Sabahattin Gucukoglu via mailop
<mailop@mailop.org> wrote:
>Subject says it all, really: what's the minimum you have to do these days to
>get a new IP (that's not otherwise policied, SMTP portblocked and has working
>FCRDNS, obviously) past most filters out of the gate, at least past SMTP
>rejections? I'm thinking of standing up a new outbound proxy for SMTP traffic
>at a well-known VPS provider that I already have a good relationship with, and
>I don't want to spend more time than is necessary to test that it's likely to
>pass the sniff test at most of the ESPs before I get everything properly
>configured. That seems to be a recurring theme nowadays, the VPS providers are
>a shell game and I obviously don't want to have to find out the hard way.
>
>So far I check SpamCop, Spamhaus Zen, and Senderscore. Anything else?
As noted, check the public lists. After that, send a significant amount of
email to the destinations you are concerned about, and deal with what you
might see. Hotmail & Co. may tell you the IP is on their internal list.
iCloud may give various ambiguous responses. Italian and French providers may
do extreme rate-limiting. Look at the logs, and proceed accordingly.
Providers large and small tend to react badly to surprises: this is the
principle behind "warm-up".
mdr
--
"There are no laws here, only agreements."
-- Masahiko
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