Client Limit reached in Dovecot

[Chandran Manikandan]

Dear Friends,
I have faced below issues since two weeks to till now. Could anyone help me
to rectify this issue.

Below message retrieve from logs and getting disconnection from Outlook and
other email clients.

Error Message

Jul 20 10:33:35 master: Warning: service(imap-login): process_limit (100)
reached, client connections are being dropped

My local.conf from dovecot folder

protocol imap {
  imap_client_workarounds = "delay-newmail"
  mail_max_userip_connections = 20
   default_process_limit = 300
}

10-master.conf

default_process_limit = 300
default_client_limit = 1000

service imap-login {
  inet_listener imap {
    # process_limit = 15
    # client_limit = 300
    #port = 143
  }

-- 
*Thanks,*
*Manikandan.C*
*System Administrator*