Fwd: [mailop] SORBS Closing.

2024-06-05 Thread Frido Otten
A little heads-up from the MailOp mailinglist. So is there anything that needs to be done to prevent false positives happening right after the shutdown? Doorgestuurd bericht Onderwerp: [mailop] SORBS Closing. Datum: Wed, 05 Jun 2024 10:36:58 +1000 Van:Michelle

Re: How to report SPAM?

2024-05-29 Thread Frido Otten
They do if you're offering mail service to a large number of users. They login to a phished mailbox, send new phishingmails to that mailbox and check the headers if they can see which rules are hit. Then they adapt the phishingmail to get a lower score until they are below the spam threshold.

FROM header obfuscation

2022-02-08 Thread Frido Otten
naked eye. You can obfuscate text using this online tool: https://obfuscator.uo1.net/ Is there any way to detect this type of obfuscation with a spamassassin rule? Best regards, Frido Otten

Rule to detect mailsploit

2017-12-06 Thread Frido Otten
Hi all, Yesterday I saw this message that a bug in mailclients allow sender spoofing which bypasses SPF/DKIM/DMARC mechanisms. Maybe you've read about it. More information about it here: https://www.mailsploit.com/index I was thinking that there might be a possiblity to detect this in

Rule to detect mailsploit

2017-12-06 Thread Frido Otten
Hi all, Yesterday I saw this message that a bug in mailclients allow sender spoofing which bypasses SPF/DKIM/DMARC mechanisms. Maybe you've read about it. More information about it here: https://www.mailsploit.com/index I was thinking that there might be a possiblity to detect this in