Port usage

The following ports are used by Webmail Messenger:

External → Internal

Port

Service

Description

22

SSH

Console access

25

SMTP

MTA

443

HTTPS

Webmail

8443

HTTPS

Web GUI

Internal → External

Port

Service

Description

25

SMTP

MTA

80

HTTP

CRL download

139

SMB/CIFS

Remote backup and restore

443

HTTPS

SMS gateway

445

SMB/CIFS

Remote backup and restore

Note

If some functionality is not required, for example backup on a remote SMB share, some ports can be closed.