Clarke Brunt wrote:
Hi, I have heard that SPF is controversial among mail administrators. Why
is that? How many
people use it (on this mailing list)?
It's certainly not a simple subject: anyone who isn't familiar see http://spf.pobox.com/
So long as you're careful, and realise that mistakes might precent mail getting through (whether yours, or your ability to receive other people's), then it seems to me to be a _good thing_.
I scrapped SPF, actually. Found that certain providers, such as T-Mobile, re-direct & intercept outbound port 25 traffic, making SPF more of a pain in the neck.
Example: I try to send mail to this list from a T-Mobile Hotspot (Starbucks) - it gets kicked back because SF.net uses SPF, and my SPF records don't show m55415454.tmodns.net in the SPF records. So what can I do? Add all of t-mobile to my SPF records? What happens next time something like that occurs?
In the end it was just easier to back off of SPF for now.. maybe later..
