Why does security/amavisd-new depend on db3?

[Jiawei Ye]

This has been bothering me for quite a while now. Either portupgrade
or portmanager reports that amavisd-new depends on db3, when my
p5-BerkeleyDB depends on db42 (WITH_BDB_VER = 42). Has anyone else
seen this?

Jiawei
--
"Without the userland, the kernel is useless."
               --inspired by The Tao of Programming