Resolved POP3 before SMTP

[Lee444]

Hi ALL
Checkbox "POP3 before SMTP lock time" is disabled for check in my plesk installation.
Plesk Onyx Version 17.0.17 Update #17 CentOS Linux 7.3.1611 (Core)‬
mail server - postfix
imap/pop3 server - dovecot

How to enable this checkbox ?

 

[mizar]

Hello,

POP3 before SMTP works only on Courier-IMAP. If you really need this feature you should switch your pop3/imap server to courier via Updates & Upgrades