Several ports must be opened for perfect operation of the REDDOXX Appliance.
SMTP/25 TCP in/out
For incoming / outgoing emails
POP3(s)/110 (995) TCP in
To fetch mail via POP3(s)
DNS/53 UDP/TCP out
For domain name service requests to your DNS server.
HTTP(s)/80, (443) TCP out
For communication with the REDDOXX portal (my.reddoxx.com), to check license information.
For the REMOTE SUPPORT SERVICE (rdxcall2.reddoxx.net and remote-support.reddoxx.com).
If technical issues occure, the REDDOXX Support can access the Appliance remotely, if the administrator activates the Remote Support Service.
For Software- (dolo.reddoxx.com) and pattern updates (pi.reddoxx.net) as well as spam- and ciss (ciss.reddoxx.com) validations.
Access to database.clamav.net is required to retrieve virus scanner updates.
HTTP(s)/80,443 TCP in
To allow communiction with the REDDOXX webinterface from Remote (e.g. for adminstrative purpose,
or to Access the User Webinterface or to connect with the REDDOXX Mobile APP).
To use Lets Encrypt SSL Certificates
NTP/123 UDP out
To adjust Time with a Time Server
SMB 137,138 UDP out, 139 TCP out, CIFS 445 TCP out, iSCSI 3260 TCP out
For backup and archiving (mail depot) on a remote share.
LDAP/389 TCP out, LDAP/636 out für SSL
For user authentication and recipient check via Active Directory, OpenLDAP, Novell eDircetory, Lotus Notes Domino.
To fetch S/MIME Certificates from external LDAP Directorys in MailSealer
LDAP/3268 TCP out
For higher-performance LDAP queries against a Global Catalog Server.
REDDOXX/55555 TCP out
For communication with the fuzzy filter remote service for spam detection.
You should pay attention to these ports when the REDDOXX Appliance is included in another network segment,
e.g. a DMZ, and separated from the internal LAN through a firewall.
The Remote Support communicates outgoing via Port 80.
As Protocol, the remote Support uses no HTTP but SSH (so your Firewall should not check if the port matches the protocoll).
It is not recommended to separate the appliance with a switch or firewall from a connected storage, as outages could damage the archive container.