authentication
Tuesday Tip: DKIM Oversigning, enable it if you can
For last week's Tuesday Tip , I shared my top five recommendations for DKIM best practices. Mostly (hopefully) easy things you can imple...
Topic
replay attacks
dkim
DKIM replay attacks and what to do about them
DKIM replay attacks are one of the new big things lately, and they work like this: Take a DKIM signed email message, and re-send it to a bil...