Dovecot don't send/recieve mail

[monalisa]

Now I can resolve my problem.
I change my master.cf

Quote:dovecot unix - n n - - pipe
flags=DRhu user=vmail:mail argv=/usr/lib/dovecot/deliver -f ${sender} -d ${recipient} -s

To

Quote:dovecot unix - n n - - pipe
flags=DRhu user=vmail:mail argv=/usr/lib/dovecot/deliver -f ${sender} -d ${recipient}

and change dovecot.conf

Quote:protocol imap {
mail_executable = /usr/lib/dovecot/imap
.
.
protocal pop3{
mail_executable = /usr/lib/dovecot/pop3
pop3_uidl_format = %08Xu%08Xv

Now I can send and recieve my email.

Thanks.