[Exim] Make exceptions to synchronization checking?

Is it possible to except certain hosts from synchronization checking? I
like having it turned on because it stops so much spam, but there are a few
legitimate hosts that have problems with it -- most notably AOL. Can I make
exceptions for those hosts without turning it off entirely?

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David Brodbeck, System Administrator
InterClean Equipment, Inc.
3939 Bestech Drive Suite B
Ypsilanti, MI 48197
(734) 975-2967 x221
(734) 975-1646 (fax)