Re: Sudden surge in spam appearing to come from my email address

2023-07-14 Thread Loren Wilton
I am suddenly getting hammered by a BUNCH of spam that appears to be from me. It scores low, and even though I keep feeding it to Bayes, it's still not hitting the threshold to be marked as spam. When I check the headers, it's coming from multiple random email servers, but many appear to origi

Re: Sudden surge in spam appearing to come from my email address

2023-07-14 Thread Grant Taylor via users
On 7/14/23 6:06 PM, Thomas Cameron wrote: I'm trying to figure out how to block this stuff. Something like "if it appears to come from me, but it's not actually coming from my email server," block it. SPF with hard fail in your own domain /and/ filtering that respects SPF hard fail will almos

Re: Sudden surge in spam appearing to come from my email address

2023-07-14 Thread Robert Senger
I've set up a subdomain lists.mydomain.de (and with regex expressions as local part, to have unique email address per list, forgot to do that here...) with soft spf and dmarc policies and that I only use for mailing lists. Then I can use hard failure spf and dkim policies for the domain mydomain.de

Re: Sudden surge in spam appearing to come from my email address

2023-07-14 Thread Thomas Cameron
This kinda raises an important issue. I already have SPF/DMARC/DKIM set up. But because I use several mailing lists, I do not have a hard fail set up. I get SO many notices when I send email to lists that I'm really worried about defining hard failures/rejections. But I'll play around with wha

Re: Sudden surge in spam appearing to come from my email address

2023-07-14 Thread David B Funk
Assuming you own/manage your infrastructure it should be straight-forward. Create SFP records for your domain & SMTP server, set them to either soft or hard fail mode. If you can, also set up DKIM signing of your outgoing mail. Then create rules that looks for your from address in a message

Sudden surge in spam appearing to come from my email address

2023-07-14 Thread Thomas Cameron
All - I am suddenly getting hammered by a BUNCH of spam that appears to be from me. It scores low, and even though I keep feeding it to Bayes, it's still not hitting the threshold to be marked as spam. When I check the headers, it's coming from multiple random email servers, but many appear