Zero length mails

[Mark Cooper]

I'm trying to debug why I'm getting zero length files generated in the
IMAP spool.

[root ~]# find /var/spool/imap/a/user/at/ -size 0 -exec ls -ld {} \;
-rw------- 1 cyrus mail 0 Aug 13 18:33 /var/spool/imap/a/user/at/823777.
-rw------- 1 cyrus mail 0 Aug 13 18:32 /var/spool/imap/a/user/at/823591.
-rw------- 1 cyrus mail 0 Aug 13 18:31 /var/spool/imap/a/user/at/823590.
-rw------- 1 cyrus mail 0 Aug 13 18:33 /var/spool/imap/a/user/at/823744.

I'm using Thunderbird 2.0.0.6 to move certain mails into cyrus imapds.
Not sure if it's Thunderbird causing the problem or cyrus.

I've enabled local6.debug but I'm not getting any logging from cyrus.

Any idea's what the zero length problem or how I can debug this??

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Mark Cooper