I am using pop3/imap, see the below file. We can't verify any logs? This is working fine from last one year. as part of testing we just stopped the services for 20minutes and restarted the dovecot and postfix server using "service <dovecot/postfix> stop/start". No issues so far... 

I would like know, if the application is reading the emails from the server, do we have any log in our server to see the same? Because I see them when the email is coming to the folder. I see them that they are deleted , once they are reading by the application. But application is not taking all the emails. few are missing, application team says. I want to tell them and show the logs that these are read by your server/application. that is my idea....

[root@server new]# doveconf -n
# 2.2.10: /etc/dovecot/dovecot.conf
# OS: Linux 3.10.0-693.17.1.el7.x86_64 x86_64 Red Hat Enterprise Linux Server release 7.4 (Maipo) xfs
disable_plaintext_auth = no
listen = *
log_path = /var/log/dovecot.log

mail_location = maildir:/kw/home/pop/%d/%n/Maildir/
passdb {
  args = /etc/dovecot/passwd
  driver = passwd-file
}
pop3_uidl_format = %g
protocols = imap pop3
ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
ssl_key = </etc/pki/dovecot/private/dovecot.pem
userdb {
  args = uid=vmail gid=vmail home=/kw/home/pop/%d/%n
  driver = static
}

On Tue, May 5, 2020 at 9:33 AM Benny Pedersen <me@junc.eu> wrote:
On 2020-05-05 10:06, Kishore Potnuru wrote:

> Please help me...

with more sparse info ?

maillist would like to see

postconf -nf
postconf -Mf
doveconf -n

how is it setup to delivery virtual transport not using dovecot-lda or
dovecot ltmp

do not make file system access to mails, use imap or pop3 protocols

as i read sparse info you are not using dovecot, so be it