DKIM signed emails: Not directly anti-spam but very related. Major outbound MX mail is generally signed by DKIM (or domainkeys). While I am not yet making rejection decisions on sigatures that fail - I do have my mail client color them green/red when a DKIM/DK sig is good/bad. I also ensure my own domains sign all outbound mail with both DKIM and DK (for yahoo!). I use thunderbird and while its easy enough to set up I do with the mail client folks would do this by default. SO it is very easy for me to see in my mail client when I have a good signed email from gmail or a fake one. gene -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines