That should work, although the mx is that any listed mx of domain.tld is allowed to send out. (Normal procedure and you don't have to list the ips that way) In essence if you have your mx as mail.domain.tld (and it does both in and out for you) you only have to say v=spf1 mx -all and you'd be done. If you want to list ips, ip ranges etc, great and I list my ptr records as well since really anything in my public ip range I may want to send mail from (in a pinch mind you, or to test things).
Mine is: "v=spf1 mx ptr a:nat.oknetx.com. a:exchange.onx.cc. ip4:68.91.137.160/27 include:oknetx.com. -all" Well since you showed me yours....... ditd.org. IN TXT "v=spf1 ip4:207.228.46.66 ip4:207.228.46.92 a:mail.davdgrp.com a:navsmtp.davdgrp.com mx:mail.davdgrp.com mx:navsmtp.davdgrp.com include:davdgrp.com -all" **This is a little complicate because..... 1. my sending mail server is not an MX for this domain 2. either 207.228.46.66, mail.davdgrp.com OR 207.228.46.92, navmstp.davdgrp.com are not in the ditd.org namespace. 3. hmmm....since 207.228.46.66 is not an MX for ditd.org should I remove that above? I send mail, but is not an MX. 4. Should I remove the include:davdgrp.com line to tighten it up a bit? Or do I need it since servers from davdgrp.com send mail for ditd.org? Thanks Again, Travis On this general note, since ptr is looking like it will be ratified at some point... It would be nice for imail and others to develop spf support natively. I know there are 'projects out there' and I'm glad declude handles it, that is a start. The thing with SPF is everyone needs to get on-board this train for it to really work. ************* Dave Heritage Dave at onx dot cc ************* To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
