#mailadmin — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #mailadmin, aggregated by home.social.
-
Blocking all *.bc.googleusercontent.com on my mailserver as they send nothing but phishing mails and spam. Google doesn't really care about the 150+ reports I sent them, so on the blocklist they go.
-
Hot Take: E-Mail-Weiterleitungen sind immer Grütze. Egal, ob mit oder ohne SRS, DKIM oder ähnlichem.
Der Mailserver, der die Mails weiterleitet, handelt sich nur Probleme ein.
#mailadmin #postmaster -
My mailserver is very German. When your mailserver tries to send a message, it does a reverse lookup on the IP address. If that doesn't deliver a valid hostname, you're out. But we are not done yet. If it gets a valid hostname, it does an A (IPv4) or AAAA (IPv6&) lookup on that hostname. And if it doesn't deliver back the same IP address, you are still out. It is fascinating to observe how often that uncovers that even big names get their DNS wrong. Hello, Spamcop ;)
-
I am THIS close to fully blocking all IP ranges from AS11377 (Sendgrid) on my mailserver as the only thing they are sending my way is Trezor phishing mails. Fellow #postmaster #mailAdmin how do you treat them?
-
For the first time ever, I've got spam.
It's from 102.213.93.28 (AfriNIC) and there is no abuse mail in the whois output, only telephone numbers. What should I do? I can DM you the full headers/mail, if it helps.
#spam #SpamMails #spammail #mailserver #mailadmin #mailadmins #afrinic #whois