[Mailman-Users] SPF best practices?
jimpop at gmail.com
Sun Aug 23 12:24:40 CEST 2015
On Sun, Aug 23, 2015 at 2:42 AM, Dennis Carr
<dennisthetiger at chez-vrolet.net> wrote:
> After a rash of bounces that brought to my attention that my SPF
> record was not properly published, I rewrote my SPF record a bit. What
> I'm looking for is some insight on best practices and a second set of
> eyes, as my list hosts for addresses all over the internet.
> The record is such:
> v=spf1 ip4:22.214.171.124 a:bast.chez-vrolet.net a:chez-vrolet.net
> a:smtp.comcast.net ~all
> This is published as a TXT record as per specification.
> The a:smtp.comcast.net is necessary so I can send email remotely
> through my ISP and clear out successfully.
"v=spf1 mx a:comcast.net -all"
"v=spf1 ip4:126.96.36.199 a:comcast.net -all"
The first one is flexible over time, the 2nd one is more strict.
> I'm a bit bothered by the '~all', however. I really don't want to do
> '-all' as I'm concerned that anybody who posts to the list would cause
> anybody on Yahoo or the MSFT owned domains (hotmail, live, etc.) to
> bounce again.
You do want -all, as Mailman sends from $list-bounces at domain.tld, not
user at gmail.com
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