Rod: Thank you very much! Tom
| On Monday, September 13, 2004, 14:31:33, Tom Pepper wrote: | > I'd appreciate it you help clarify for me a couple of questions | > concerning SPF. | > Our mail server requires authentication. | | Thank you :-) | | > 1) We have several laptops that are taken out of the network and used from | > various locations, such as home or while on the road, and some pc's that are | > used at home. In all cases, our domain is set up on them for email. | > | > For those who have an outside ISP that allow users to authenticate to our | > mail server (sharpcom.com) may I assume that there are no issues with our | > SFP, even though the IP address on the computer will be different than our | > network IPs? | | Its your MTA's IP address that will be contacting other MTAs, not the | MUA that asked it to relay. | | > 2) For those computers that do *not* have an ISP that will allow | > authentication through our mail server, and require us to use their | > outgoing mail server, I further assume we must add individual IPs or | > IP blocks as exceptions in our SPF records? | | Depends on if the envelope sender address is [EMAIL PROTECTED] or if | they're sending as [EMAIL PROTECTED] | | If the latter then yes, you'll have to identify each and every outgoing | server from all the possible ISP's that your users might conceivably use | and make sure you keep it updated every time one of those ISPs changes | its configuration. | | Note that this and the forwarding issue are two of the stumbling blocks | in the acceptance of Sender Policy Framework. | | 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/
