I have been struggling with this for some time now. I have searched, tried, broke it, fixed it, and still no luck. Will somebody please help me see what is wrong?

[root@mail ~]# dovecot --version

2.2.36 (1f10bfa63)

[root@mail ~]# dovecot -n

# 2.2.36 (1f10bfa63): /etc/dovecot/dovecot.conf

# OS: Linux 3.10.0-1160.2.2.el7.x86_64 x86_64 CentOS Linux release 7.9.2009 (Core)

# Hostname: mail.mydomainname.com

auth_mechanisms = plain login

disable_plaintext_auth = no

first_valid_uid = 1000

mail_location = maildir:~/Maildir

mbox_write_locks = fcntl

namespace inbox {

inbox = yes

location =

mailbox Drafts {

special_use = \Drafts

}

mailbox Junk {

special_use = \Junk

}

mailbox Sent {

special_use = \Sent

}

mailbox "Sent Messages" {

special_use = \Sent

}

mailbox Trash {

special_use = \Trash

}

prefix =

}

passdb {

driver = pam

}

service auth {

unix_listener /var/spool/postfix/private/auth {

group = postfix

mode = 0666

user = postfix

}

unix_listener auth-userdb {

group = postfix

user = postfix

}

}

service imap-login {

inet_listener imap {

port = 143

}

inet_listener imaps {

port = 993

ssl = yes

}

}

ssl_cert =

ssl_key = # hidden, use -P to show it

userdb {

driver = passwd

}

From maillog:

(Successful login from localhost via squirrel mail)

Dec 24 16:14:19 mail dovecot: imap-login: Login: user=<terry>, method=PLAIN, rip=::1, lip=::1, mpid=2279, secured, session=<CJKj9z23kN0AAAAAAAAAAAAAAAAAAAAB>

(Unsuccessful login from remote ip via Outlook)

Dec 24 16:13:53 mail dovecot: imap-login: Disconnected (auth failed, 1 attempts in 4 secs): user=terry@mydomainname.com, method=PLAIN, rip=75.xx.xx.xx, lip=198.xx.xx.xx, session=<1s/i9T23yspLRsWA>

I would be most grateful for any assistance anyone can provide -- my head is sore from beating against the wall! 😊