Dear Friends
Iam using
Release 6.0.1_GA_1816.RHEL5_20090911181524 CentOS5 FOSS edition.
The server was workinng fine .But from last week i noticed there are certain mails exists in the mailque.The zimbra log says that

pop postfix/smtp[12398]: 028B913C8006: to=<>,[]:25, delay=36645, delays=34420/1004/601/620, dsn=4.4.2, status=deferred (conversation with[] timed out while sending end of data -- message may be sent more than once)

I couldnt find an reason for not sending the mail.The mail has some attachment also.
Pls help me to solve this problem
Thans in advance.