By default mysql only accept 1meg sql statement. To change this
edit /etc/my.cnf and enter

set-variable=max_allowed_packet=10M

in the [mysqld] section.

Restart the MySQL server. The maximum is 16megs. This means the larger
email allowed by mailsql is a little less than 16megs. At some point
we will have to address this. Either larger mail will be stored
in a special directory or as several MySQL records. Probably the later
since it make the mail message usable with a single protocol.

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MySQL support has no more limit on this side, so you can set
max_allowed_packet to pretty much any size.

Comments welcome