Has anyone else implemented these? Are they worthwhile? Problems?
SPF is very little trouble, gives very little protection, but enough to be worth the hassle. DomainKeys offers more protection. dk-milter is easy to set up, the DNS is easy to set up. I've also found that rejecting all SMTP mail addressed from my domain works well in reducing spam (mail from my domain should use SMTP-Submission). -- Glen Turner -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
