Am 07.03.23 um 20:32 schrieb Charles Sprickman:
On Mar 7, 2023, at 1:14 PM, Robert Schetterer via Postfix-users
<postfix-users@postfix.org> wrote:
Am 07.03.23 um 18:57 schrieb Patrick Ben Koetter via Postfix-users:
* toganm--- via Postfix-users <tog...@dinamizm.com>:
Maybe it would have been a better idea to check if the mail server is listed
in any rbl sites. For one it is listed in Abusix and my server is rejected it
as a result
What makes you believe the IP had been blocklisted before?
The IP was blocklisted today. It wasn't on a blocklist before that. That's
what the details show on the abusix report.
p@rick
Some rbls blocklisted ips , simply by the the fact, they never saw smtp traffic before
from that ip, in the past. doubtful reputation policy... I remember i needed i had to do
"warm up phase" with them ,sure long time ago.
There are a few businesses now that offer IP "warm-up" services for mailing list providers.
Probably not helpful in this specific instance, but they are good for the large mail providers like gmail
that do their filtering with "secret sauce". They basically maintain a fleet of user accounts on
all the major freemail providers and send your sample content through your smtp server over a period of a
week or so. They also automate interaction with the inbox - including marking it "not spam". Not
cheap though... and I have no idea how they justify a business that relies on breaking the AUP of the
freemail providers. :)
Charles
in the old times, i had mass IP segments never used for anything,
starting a new mail service there with new domain and small non spam
traffic ( with spf, dkim etc ) getting it on RBLS at once was a big
suprise *g
The reputation idea of default hard blocklist by never seen before
should be rethinked , however in some special cases it maybe ok.
At the end i wouldnt hire somebody for simple sending warm up smtp
traffic, also its easy to monitor your ip getting in rbls
https://blog.sys4.de/xymon-rbl-check-script-de.html
for sure very old, as i am not longer involved in mail stuff
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http://sys4.de, +49 (89) 30 90 46 64
Schleißheimer Straße 26/MG, 80333 München
Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263
Vorstand: Patrick Ben Koetter, Marc Schiffbauer
Aufsichtsratsvorsitzender: Florian Kirstein
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