Advanced

security_advanced_advanced

Field	Description
Perform a greeting delay for new SMTP connection	Specify a non-zero value here and IceWarp Server will wait that many seconds before responding to an incoming SMTP session. Most spammers systems will time out very quickly as they want to get as much mail delivered as possible within a short time. Genuine connections will wait.
Reject if SMTP AUTH is different from sender	Check this option to reject any connections where the Sender information differs from the information used in the SMTP AUTH command.
Use global level POP before SMTP	Check this option and any IP address from which a successfully authenticated POP or IMAP connection was made in the past N minutes (N specified under Security – General) will be allowed to initialize SMTP session with the same rights as if it was successfully SMTP authenticated.
Relay only if originator's domain is local	Check this option to only allow relaying from local domains.
Require HELO/EHLO	Check this option to deny any connections that do not use the HELO or EHLO commands when they connect.
Use HELO/EHLO Filter	Click the Edit File button to open the heloehlo.dat file. Here you can create/edit filters. Syntax rules and examples are given there (click the Comment button to reveal them).
"B" button	Click the button to open the Bypass dialog where you can define items that will bypass defined filters. For more details, refer to the Bypassing Rules/Filters section.

security_advanced_other

Field	Description
Protocol Policy	Press this button to specify Protocol Policy settings. Examples are given within the file. NOTE: You can disable plain text authentication here. This applies for all services (FTP, IMAP, SMTP, POP3, ...) – users will not be able to login with USER/PASSWORD, LOGIN unless using SSL. Additionally, LOGIN and PLAIN authentication schemes will not be published in the CAPAbility responses. AUTHPlainDisable=1
SMTP Policy Banner	Press this button to specify banner text that will be presented to any client connect to the server to send messages. Examples are given within the file.
Server Title	By default, IceWarp Server will identify itself to a connecting server. Some hackers can use this information to exploit your server. Press this button to change the identification text so no-one can identify the server software you are running. An example is given within the file.