Re: [Exim] lookups in ACLs

William Thompson wrote:
> Does exim cache lookups? Since the RCPT acl is ran for each address,
> conditions that match things other non-rcpt commands are queried again (for
> instance checking the sender in an rcpt acl).
>

Yes, exim caches most lookups during the lifetime of that process.
Multiple references to the same lookup during the processing of a single
message will be optimized into a single actual lookup.

If you use address callout verification, those are cached across exim
processes as well.