On 07/22/2013 06:51 AM, Chris Angelico wrote: >> Thanks for the tip. I didn't know about SPF >> http://en.wikipedia.org/wiki/Sender_Policy_Framework > > It's a great way of detecting legit vs forged mail. If anyone tries to > send mail purporting to be from anyth...@kepl.com.au and the receiving > mail server is checking SPF records, it'll be rejected after one cheap > DNS lookup. It's a simple and cacheable way to ask the owning server, > "Is this guy allowed to send mail for you?". (The 192.168 block in my > SPF record above is permitted to allow some intranet conveniences; > omit it unless you need it.)
Yes setting SPF records will help your mail be accepted by other servers, but I disagree with your appeal to make mail server SPF handling as strict as your server does. SPF has problems in a number of situations which could cause legitimate mail to be rejected. In my last job I could only use SPF as one spam factor, not as a basis for rejection. -- http://mail.python.org/mailman/listinfo/python-list
