Service Ports
Each service is bound to one or more IP addresses and port number.
These can be changed if required, however, IceWarp Server Reference's default ports conform to Internet standards which are commonly defined in client applications and may be required by your ISP.
Most installations will work correctly with the defaults.
If you are using Firewall, you must open the TCP ports for all the services you are using. This applies only for Linux, for Windows it is done automatically.
Warning: IceWarp Server's POP3 and IMAP run as one module, so if you stop this module, both services will also stop.
The same applies for IM and SIP. You should also be aware that IceWarp WebClient and FTP run under the Control service.
If you stop or restrict access to the Control service, your users may not be able to use IceWarp WebClient or FTP.
Service Ports
Note: All ports are TCP ones unless stated otherwise.
|
Service |
Purpose |
Basic Ports |
SSL Ports |
|---|---|---|---|
|
SMTP |
Send mail Users send out emails, server sends and receives emails to/from other mail servers |
25 2nd basic port: 587 (for more info refer to Submission Port (RFC4409) in Mail Service > Security > General) This port can be set also via the c_system_services_smtp_altport API variable. For more information on using TLS/SSL, refer to Use TLS/SSL in Mail Service > Security > Advanced. Older installations used the port of 366 as a 2nd basic one. |
The port 465 is obsolete and is not to be used. |
|
POP3 |
Receive mail |
110 |
995 |
|
IMAP |
Read mail |
143 |
993 |
|
Web (Control) |
Web admin, web mail, proxy server, WebDAV, CalDAV, iSchedule |
80 2nd basic: 32000 |
443 2nd port: 32001 |
|
Groupware |
GroupWare and Calendar |
5229 It is necessary to open this port only if some 3rd party application wants to access groupware API from the outside. |
|
|
GroupWare Notification |
GW push |
32002 |
|
|
IM |
Instant Messaging Server |
5222 2nd basic port: 5269 |
The port 5223 is obsolete and is not to be used. |
|
LDAP |
LDAP Server (directory service) |
389 |
636 |
|
FTP |
File Transfer Protocol |
21 (or 20) plus user-defined range (see Options in FTP Service.) |
990 |
|
SIP/VoIP |
Session Initiation Protocol Delivery of voice communications over IP networks. |
5060 plus user-defined range (see SIP) This is a UDP & TCP port. |
5061 |
|
SOCKS |
Routing of network packets between client-server applications via a proxy server. |
1080 |
|
|
Minger |
Use of domain sharing across multiple servers. |
4069 This is a UDP port. |
4070 |
|
SNMP |
Simple Network Management Protocol |
161 This is a UDP port. |
|
|
Time server |
Time server has to be enabled in console |
13 |
|
Note: You may also need to set specific IP binding of the machine the server is running on if that machine is running other, non-IceWarp Server services (IIS, for example) as IceWarp Server will bind to all available IP addresses. The same port/IP cannot be used by more then one server software.
Note: For more details about DNS SRV records, refer to the IM > Trusted Hosts, GroupWare > WebDAV, VoIP > Advanced sections plus to http://en.wikipedia.org/wiki/SRV_record.
