Protocol

The Protocol tab allows you to set your protocols.

Figure. Advanced management: Protocol tab.

Extensions Section

Field	Description
Enable SSL/TLS	This option lets you enable or disable the SSL/TLS engine. It is enabled by default. It is used by all protocols SMTP, POP3, etc. depending on client and port defined there.
Enable IPv6 Protocol	This option enables IPv6 protocol support. IceWarp Server supports the IPv6 protocol completely, including AAAA DNS records and IPv6 service binding.
Enable Daytime server (Port)	IceWarp Server can act as a time server for your whole network, allowing you to keep the time synchronized on all your network servers and PCs. Specify which port IceWarp Server will listen on, the default port is 13. Mind the Firewall.
Enable Daytime clock synchronization	When checked, IceWarp Server will synchronize itself with an Internet-based atomic clock on a regular basis.
Enable Change password protocol	This option allows a user to change his/her password via the POP3 protocol. The user's mail client must support this feature. You will also need to manually bind POP3/IMAP to port 106 to use this feature. Mind the Firewall.

Special Section

Field	Description
Multi CPU support	If your server is multi CPU, this option allows IceWarp Server to utilize these capabilities. This can significantly improve IceWarp Server's performance on medium to high load servers. In the case of multi-core processors, each core is considered as one processor.
Multithreaded DB Access (Thread pooling)	Check the box to use multiple threads for database activity, and enter the number of threads to use (for all services together).

Field

Description

Multi CPU support

If your server is multi CPU, this option allows IceWarp Server to utilize these capabilities.

This can significantly improve IceWarp Server's performance on medium to high load servers.

In the case of multi-core processors, each core is considered as one processor.

Multithreaded DB Access (Thread pooling)

Check the box to use multiple threads for database activity, and enter the number of threads to use (for all services together).

Simple Authentication And Security Layer (SASL) Section

Simple Authentication And Security Layer (SASL) section lists all SASL mechanisms (including GSSAPI – SSO/Kerberos authentication). With these settings, you can control the published mechanisms for SMTP, POP3, IMAP, IM, and other protocols. Mail clients detect these mechanisms and automatically choose the best security for authentication.

Field	Description
PLAIN	Check the box to enable plain text authentication (not encrypted).
LOGIN	Check the box if you want to enable the Login authentication (base-64 encryption).
DIGEST-MD5	Check the box if you want to enable the Digest-MD5 authentication. (For more information, refer to RFC 2831.)
CRAM-MD5	Check the box if you want to enable the CRAM-MD5 authentication. (For more information, refer to RFC 2195.)
NTLM	Check the box to enable NT LAN Manager (Microsoft Windows) authentication.
GSSAPI	Check the box to enable Single Sign-On authentication.
Disable plain authentication for all services	Check the box to prohibit plain authentication for all services. Note: This checkbox overrides both PLAIN and LOGIN checkboxes. Note: When checked, WebClient cannot log into the SMTP service. As a work-around, check whether your localhost is in trusted IP Addresses (Mail – Security – General) – if not, add it – and unCheck the Use SMTP authentication box ( – see info about user limits counting in General). Note: Restart all services after performing changes.

Strings Translation Button

Using the file strings.dat lets you easily translate all server generated email message strings.