Probably this is something for the mailing list administrator
or possibly the libspf2 developers, but the problem
occurs with this list....
As mentioned in a post to spf-devel last week,
I sometimes seem to be getting softfails for mailing list posts
originating from v2.listbox.com. I now managed to trace this
down to the builtin maximum of 5 MX-Entries that
will be evaluated when one specifies "mx" in the
SPF recorde, there are however
6 mx entries for domain listbox.com.
Whenever the 6th MX (in the order that they are retrieved
from DNS) is the one that would "allow" the sender-IP
used, posts will be marked softfail (and thus be copied to my spambox).
So what's the problem here? The MX setup
of Listbox.com? My various libspf2-Installations? Puzzled....
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