Recently upgraded the mail server, QMail-Scanner, ClamAV, spamassassin installed.
After the installation, it is found that the send annex is a message in the RAR format.
Information is QQ Temporary Problem (# 4.3.0)
Meditation I want to add a hard google, and finally I found that Clamav ghosts because it does not support the decompression of the RAR format file, so they cannot scan the attachments.
So this error was generated.
As for the solution, there is no method now, which can only be sent to the RAR format to zip format.
