Milter-greylist

Dear Emmanuel,

just tried 4.1.1 with configuration (using libspf2) and ran into a seg
fault condition. Just wondering no one ran into this until know ...

Some debugging uncovers a call to spf_check with a NULL pointer from
milter-greylist.c via a macro SPF_CHECK forcing the first parameter
(acl_data_t *ad) to be NULL. The extented implementation of ACL handling
seems not to expect that this pointer can be NULL ... :(

I enclosed my suggested patch. It would be nice to confirm and add this
patch (if I am understand and implemented it right ;) ):
In case the NULL pointer is given this is mapped to the desired
ACL spf status MGSPF_PASS. This seems to provide the same behaviour
right before the ACL extension has been added.


With this patch milter-greylist works as before (already in production
at our site).


Johann