Yes, POP3 and IMAP services are ok, Send is ok. but can not receive.
/var/log/dovecot.log:
Jul 07 20:02:02 imap(ttt@abc.com.vn): Debug: Namespace : type=private, prefix=, sep=/, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir://home /vmail/abc.com.vn/ttt//Maildir/:INDEX=//home/vmail/abc.com.vn/ttt//Maildir/
Jul 07 20:02:02 imap(ttt@abc.com.vn): Debug: maildir++: root=//home/vmail/abc.co m.vn/ttt//Maildir, index=, control=, inbox=//home/vmail/abc.com.vn/ttt//Maildir, alt=
Jul 07 20:02:02 imap(ttt@abc.com.vn): Debug: Namespace : type=shared, prefix=Sha red/%u/, sep=/, inbox=no, hidden=no, list=children, subscriptions=yes location=m aildir:/%Lh/Maildir/:INDEX=/%Lh/Maildir/Shared/%u
Jul 07 20:02:02 imap(ttt@abc.com.vn): Debug: shared: root=/var/run/dovecot, inde x=, control=, inbox=, alt=
Jul 07 20:02:02 imap(ttt@abc.com.vn): Debug: Namespace : Using permissions from //home/vmail/abc.com.vn/ttt//Maildir: mode=0700 gid=-1
Jul 07 20:02:02 imap(ttt@abc.com.vn): Info: Disconnected: Logged out bytes=233/8
/var/log/maillog
Jul 7 20:04:51 tvbh postfix/pipe[25320]: 84AC038093E: to=<test2@abc.com.vn>, relay=dovecot, delay=2221, delays=2221/0.03/0/0.1, dsn=4.3.0, status=deferred (temporary failure)
Jul 7 20:04:51 tvbh postfix/pipe[25333]: 1D017380946: to=<test2@abc.com.vn>, relay=dovecot, delay=2120, delays=2119/0.03/0/0.09, dsn=4.3.0, status=deferred (temporary failure)
Jul 7 20:04:51 tvbh postfix/pipe[25332]: 24AC6380947: to=<test3@abc.com.vn>, relay=dovecot, delay=957, delays=956/0.02/0/0.14, dsn=4.3.0, status=deferred (temporary failure)
Jul 7 20:04:51 tvbh postfix/pipe[25335]: A1628380945: to=<test2@abc.com.vn>, relay=dovecot, delay=2375, delays=2375/0.04/0/0.2, dsn=4.3.0, status=deferred (temporary failure)
Please help !