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FUD - provide information about user mailboxes
fud [ -C config-file ] [ -U uses ] [ -T timeout ] [ -D ]
FUD is a long lived datagram daemon started from master that provides information about when a user last read their mail, when mail last arrived in a user's mailbox, and how many messages are recent for that user.
Note that for FUD to run properly you must set proto=udp in its cyrus.conf services entry. prefork=1 is also recommended. FUD will automatically proxy any and all FUD requests to the appropriate backend server if it is runing on a Cyrus Murder frontend machine.
FUD reads its configuration options out of the imapd.conf(5) file unless specified otherwise by -C.
-C config-file
Read configuration options from config-file.