I run 4 Linux mailservers and do all my own DNS for multiple domains Yesterday (I think) one account on one domain got about 500 emails similar to what you described in a period of about 30 minutes. I have SPF records on many of my domains (because it was so simple to set up), and promptly added it to the DNS of the domain of the affected account. Today the number of such emails was down at least 10x, but I can't say for sure it was the SPF that did it. Dick
Hi,
Are any of you admins out there running SPF, or something similar?
How well does it work for you?
Today I started getting a large number of "undeliverable" responses due to spammers forging my email address in the From: address.
Wondering if SPF is worth the trouble to set up.
I'm using postfix, btw.
Thanks, -Jamie