I go to Settings - Protocols and try to change various settings in POP, IMAP, SMTP IN and SMTP Out sections.
Like Banner, Allow Relay (this is actually the one I need to modify urgent), Command Timeout, etc. Plus, if I go to Settings - Security - Whitelist and I want to add an IP range to whitelist and enable SMTP Auth Bypass, after I enable the setting, it reverts back to OFF. All other settings (SMTP, POP, IMAP, XMPP) remains ON, but SMTP auth Bypass changes back to OFF.
We did not have this problem before upgrade and need urgent to change some settings in SMTP protocol.
Please help. Thank you,