Howdy! I've a use case where I need to look up a recipient and block delivery if the user is present in a memcache. The NORMAL use case with my memcache works fine -- eg, the presence of a result, but I've been unable to find a way in my research so far that seems to allow me to negate a result. I see a regex table, but my use case needs to have another system add values to the memcache. I'm also going with the assumption here that a memcache would be more efficient performance-wise and allows me to leverage "expiring" values over time.
I'm using smtpd_recipient_restrictions = permit_mynetworks, (***) check_recipient_access memcache:deny-recipients.cf type lookup, just need an idea on what that *** bit might look like. I suspect I could cobble together a milter, but this use case feels well suited for a simple lookup and have less overhead than any milter would, if only I could negate it. Any suggestions, warnings NOT to do it this way, or pointers appreciated. Thanks jc
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