Need some help in resolving the issue described below and would greatly 
appreciate any assistance. Please let me know if any additional information is 
required. Thank you.

Updated Postfix with signed certificates from self signed and am experiencing 
several new log entries that I am unable to identify. See history that follows.

* Self signed certificate in Postfix with pop3. Has worked this way since 
original install.
Dec 29 00:12:41 mail dovecot: pop3-login: Login: user=<usr1>, method=PLAIN, 
rip=209.197.77.67, lip=10.0.1.211, mpid=15448, TLS, session=<CuXLvmEqzM/RxU1D>
Dec 29 00:12:41 mail dovecot: pop3(usr1): Disconnected: Logged out top=0/0, 
retr=0/0, del=0/2825, size=204691614

* Updated log entry for signed certificate in Postfix. Original self signed 
certificate still used in Dovecot. Note new disconnect record with information 
such as <136791><t3CWAKwqpieu9RkM> before the Disconnected message. Unable to 
find anything about these codes.
Jan  1 16:48:12 mail dovecot: pop3-login: Login: user=<usr1>, method=PLAIN, 
rip=174.245.25.12, lip=10.0.1.211, mpid=136791, TLS, session=<t3CWAKwqpieu9RkM>
Jan  1 16:48:13 mail dovecot: pop3(usr1)<136791><t3CWAKwqpieu9RkM>: 
Disconnected: Logged out top=0/0, retr=0/0, del=0/2867, size=206803370

* Self signed certificate in Postfix with imap.
Dec 29 00:06:30 mail dovecot: imap-login: Login: user=<usr2>, method=PLAIN, 
rip=10.0.1.101, lip=10.0.1.211, mpid=15104, TLS, session=<bZezqGEqBMMKAAFl>
Dec 29 00:06:31 mail dovecot: imap(usr2): Connection closed (SELECT finished 
0.177 secs ago) in=102 out=952

* Updated non self signed certificate in Postfix. Original self signed 
certificate still used in Dovecot. Similar information before Disconnect 
message.
Jan  1 16:55:00 mail dovecot: imap-login: Login: user=<usr2>, method=PLAIN, 
rip=10.0.1.4, lip=10.0.1.211, mpid=136855, TLS, session=<Z/7hGKwqntEKAAEE>
Jan  1 16:55:00 mail dovecot: imap(usr2)<136855><Z/7hGKwqntEKAAEE>: Connection 
closed (SELECT finished 0.117 secs ago) in=106 out=1012 deleted=0 expunged=0 
trashed=0 hdr_count=0 hdr_bytes=0 body_count=0 body_bytes=0

Issue persists and appears worse when attempting to access the mail server with 
the Rainloop web application. Rainloop log messages before signed certificate 
update appeared as the following:
Dec 29 07:09:17 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=20215, TLS, session=<xTGtkGcqKNgKAAHT>
Dec 29 07:09:17 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=20216, TLS, session=<azKtkGcqMtgKAAHT>
Dec 29 07:09:17 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=20217, TLS, session=<Qz2tkGcqOtgKAAHT>
Dec 29 07:09:17 mail dovecot: imap(usr): Logged out in=211 out=2047
Dec 29 07:09:17 mail dovecot: imap(usr): Logged out in=28 out=787
Dec 29 07:09:17 mail dovecot: imap(usr): Logged out in=80 out=1449
Dec 29 07:09:17 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=20218, TLS, session=<0EetkGcqRNgKAAHT>
Dec 29 07:09:17 mail dovecot: imap(usr): Logged out in=350 out=1381
Dec 29 07:09:17 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=20220, TLS, session=<U8+vkGcqVNgKAAHT>
Dec 29 07:09:17 mail dovecot: imap(usr): Logged out in=713 out=66680
Dec 29 07:09:24 mail dovecot: imap(usr): Connection closed (SELECT finished 
0.176 secs ago) in=110 out=970

But now contain the same type of <141032><n0r2ZbAqLLMKAAHT> entries before 
Logged out and seems to be completing significantly more logins and logouts. 
Note the web interface is working. 
Jan  1 22:02:53 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141032, TLS, session=<n0r2ZbAqLLMKAAHT>
Jan  1 22:02:53 mail dovecot: imap(usr)<141032><n0r2ZbAqLLMKAAHT>: Logged out 
in=11 out=457 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 
body_count=0 body_bytes=0
Jan  1 22:02:53 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141034, TLS, session=<4OP7ZbAqOLMKAAHT>
Jan  1 22:02:53 mail dovecot: imap(usr)<141034><4OP7ZbAqOLMKAAHT>: Logged out 
in=80 out=1470 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 
body_count=0 body_bytes=0
Jan  1 22:02:54 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141038, TLS, session=<Grz9ZbAqSLMKAAHT>
Jan  1 22:02:54 mail dovecot: imap(usr)<141038><Grz9ZbAqSLMKAAHT>: Logged out 
in=342 out=1473 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 
body_count=0 body_bytes=0
Jan  1 22:02:54 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141039, TLS, session=<+Mf9ZbAqVLMKAAHT>
Jan  1 22:02:54 mail dovecot: imap(usr)<141039><+Mf9ZbAqVLMKAAHT>: Logged out 
in=693 out=37481 deleted=0 expunged=0 trashed=0 hdr_count=20 hdr_bytes=20978 
body_count=0 body_bytes=0
Jan  1 22:02:59 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141041, TLS, session=<MxRKZrAq6IcKAAHT>
Jan  1 22:02:59 mail dovecot: imap(usr)<141041><MxRKZrAq6IcKAAHT>: Logged out 
in=28 out=881 deleted=0 expunged=0 trashed=0 hdr_count=0 hdr_bytes=0 
body_count=0 body_bytes=0
Jan  1 22:03:07 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141043, TLS, session=<SsLKZrAq7ocKAAHT>
Jan  1 22:03:07 mail dovecot: imap(usr)<141043><SsLKZrAq7ocKAAHT>: Logged out 
in=525 out=10554 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=3522 
body_count=1 body_bytes=4807
Jan  1 22:03:08 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141045, TLS, session=<b2/bZrAq/IcKAAHT>
Jan  1 22:03:08 mail dovecot: imap(usr)<141045><b2/bZrAq/IcKAAHT>: Logged out 
in=523 out=15895 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=947 
body_count=1 body_bytes=13215
Jan  1 22:03:09 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141047, TLS, session=<P3XrZrAqsJYKAAHT>
Jan  1 22:03:09 mail dovecot: imap(usr)<141047><P3XrZrAqsJYKAAHT>: Logged out 
in=523 out=8719 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=779 
body_count=1 body_bytes=6300
Jan  1 22:03:10 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141049, TLS, session=<JmD7ZrAqwJYKAAHT>
Jan  1 22:03:10 mail dovecot: imap(usr)<141049><JmD7ZrAqwJYKAAHT>: Logged out 
in=523 out=13125 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=780 
body_count=1 body_bytes=10700
Jan  1 22:03:11 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141051, TLS, session=<kkoLZ7Aq0JYKAAHT>
Jan  1 22:03:11 mail dovecot: imap(usr)<141051><kkoLZ7Aq0JYKAAHT>: Logged out 
in=523 out=8022 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=800 
body_count=1 body_bytes=5582
Jan  1 22:03:12 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141055, TLS, session=<7ywbZ7Aq4JYKAAHT>
Jan  1 22:03:12 mail dovecot: imap(usr)<141055><7ywbZ7Aq4JYKAAHT>: Logged out 
in=523 out=13955 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=1113 
body_count=1 body_bytes=11104
Jan  1 22:03:13 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141057, TLS, session=<JAMrZ7Aq6JYKAAHT>
Jan  1 22:03:13 mail dovecot: imap(usr)<141057><JAMrZ7Aq6JYKAAHT>: Logged out 
in=523 out=14232 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=774 
body_count=1 body_bytes=11814
Jan  1 22:03:14 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141059, TLS, session=<lvE6Z7Aq9JYKAAHT>
Jan  1 22:03:14 mail dovecot: imap(usr)<141059><lvE6Z7Aq9JYKAAHT>: Logged out 
in=523 out=6987 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=749 
body_count=1 body_bytes=4599
Jan  1 22:03:15 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141061, TLS, session=<6NdKZ7AqBJcKAAHT>
Jan  1 22:03:15 mail dovecot: imap(usr)<141061><6NdKZ7AqBJcKAAHT>: Logged out 
in=523 out=7126 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=812 
body_count=1 body_bytes=4676
Jan  1 22:03:16 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141063, TLS, session=<ebpaZ7AqCJcKAAHT>
Jan  1 22:03:16 mail dovecot: imap(usr)<141063><ebpaZ7AqCJcKAAHT>: Logged out 
in=523 out=26116 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=861 
body_count=1 body_bytes=23498
Jan  1 22:03:17 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141065, TLS, session=<2aRqZ7AqDJcKAAHT>
Jan  1 22:03:17 mail dovecot: imap(usr)<141065><2aRqZ7AqDJcKAAHT>: Logged out 
in=523 out=8776 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=775 
body_count=1 body_bytes=6374
Jan  1 22:03:18 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141067, TLS, session=<b4d6Z7AqAOIKAAHT>
Jan  1 22:03:18 mail dovecot: imap(usr)<141067><b4d6Z7AqAOIKAAHT>: Logged out 
in=523 out=9875 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=749 
body_count=1 body_bytes=7498
Jan  1 22:03:20 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141069, TLS, session=<a3GKZ7AqCuIKAAHT>
Jan  1 22:03:20 mail dovecot: imap(usr)<141069><a3GKZ7AqCuIKAAHT>: Logged out 
in=523 out=61311 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=1153 
body_count=1 body_bytes=58591
Jan  1 22:03:21 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141071, TLS, session=<AHuaZ7AqDuIKAAHT>
Jan  1 22:03:21 mail dovecot: imap(usr)<141071><AHuaZ7AqDuIKAAHT>: Logged out 
in=523 out=9458 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=1150 
body_count=1 body_bytes=6745
Jan  1 22:03:22 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141073, TLS, session=<X2WqZ7AqGuIKAAHT>
Jan  1 22:03:22 mail dovecot: imap(usr)<141073><X2WqZ7AqGuIKAAHT>: Logged out 
in=523 out=11885 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=772 
body_count=1 body_bytes=9482
Jan  1 22:03:23 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141075, TLS, session=<eEu6Z7AqKOIKAAHT>
Jan  1 22:03:23 mail dovecot: imap(usr)<141075><eEu6Z7AqKOIKAAHT>: Logged out 
in=523 out=8665 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=777 
body_count=1 body_bytes=6326
Jan  1 22:03:24 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141077, TLS, session=</i3KZ7AqOOIKAAHT>
Jan  1 22:03:24 mail dovecot: imap(usr)<141077></i3KZ7AqOOIKAAHT>: Logged out 
in=523 out=42692 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=778 
body_count=1 body_bytes=40360
Jan  1 22:03:25 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141079, TLS, session=<NCDaZ7AqOuIKAAHT>
Jan  1 22:03:25 mail dovecot: imap(usr)<141079><NCDaZ7AqOuIKAAHT>: Logged out 
in=523 out=19469 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=1641 
body_count=1 body_bytes=16070
Jan  1 22:03:26 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141081, TLS, session=<QAfqZ7AqPuIKAAHT>
Jan  1 22:03:26 mail dovecot: imap(usr)<141081><QAfqZ7AqPuIKAAHT>: Logged out 
in=523 out=9596 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=858 
body_count=1 body_bytes=7098
Jan  1 22:03:29 mail dovecot: imap-login: Login: user=<usr>, method=PLAIN, 
rip=10.0.1.211, lip=10.0.1.211, mpid=141083, TLS, session=<AgEYaLAqgLUKAAHT>
Jan  1 22:03:29 mail dovecot: imap(usr)<141083><AgEYaLAqgLUKAAHT>: Logged out 
in=523 out=11342 deleted=0 expunged=0 trashed=0 hdr_count=1 hdr_bytes=1188 
body_count=1 body_bytes=8581
Jan  1 22:10:40 mail dovecot: imap(usr)<141310><rUXLgbAqGq8KAAE8>: Connection 
closed (SELECT finished 0.074 secs ago) in=101 out=966 deleted=0 expunged=0 
trashed=0 hdr_count=0 hdr_bytes=0 body_count=0 body_bytes=0
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