請教各位大大
我在安裝ClamAV+Amavisd-new時
執行service amavisd start 之後
出現了以下的訊息
請問有人知道如何解決嗎

[root@mail ~]# service amavisd start
Starting amavisd: ERROR: MISSING REQUIRED BASIC MODULES:
MIME::Words
MIME::Head
MIME::Body
MIME::Entity
MIME::Parser
MIME::Decoder::Base64
MIME::Decoder::Binary
MIME::Decoder::Gzip64
MIME::Decoder::NBit
MIME::Decoder::QuotedPrint
MIME::Decoder::UU
BEGIN failed--compilation aborted at /usr/sbin/amavisd line 123.
[失敗]

把這些東西裝好就好了
MIME::Words
MIME::Head
MIME::Body
MIME::Entity
MIME::Parser
MIME::Decoder::Base64
MIME::Decoder::Binary
MIME::Decoder::Gzip64
MIME::Decoder::NBit
MIME::Decoder::QuotedPrint
MIME::Decoder::UU

MIME::Words
MIME::Head
MIME::Body
MIME::Entity
MIME::Parser
MIME::Decoder::Base64
MIME::Decoder::Binary
MIME::Decoder::Gzip64
MIME::Decoder::NBit
MIME::Decoder::QuotedPrint
MIME::Decoder::UU

請問大大這些代表什麽意思啊？