Access Specifications (EN)

SMTP Access 

 

 SMTP / SMTPS / SMTP over TLS (port 25) 

 SMTPS (port 465)

 

 TLS / STARTTLS support 

 

 

 SUBMISSION (port 587)

 

 TLS / STARTTLS support 

 

 

 

 Technology Notes: Postfix SMTP 

 Option to enabled or disable for each of the following 

   

 IMAP Access 

 

 IMAPS (port 993) 

 

 IMAP (port 143) is disabled by default due to it being unencrypted) 

   

 Active-Sync Access 

 

 HTTPS (port 443) 

 

   

 Web-Access (Webmail, Cloud Storage, Caldav, CardDav, iCal, Chat) 

 All access to Web services is via load balancer apps which protect inside infrastructure from mis-configured clients, as well as automatically renew SSL certificates every 3 months. 

 

 HTTP redirects traffic to HTTPS 

 HTTPS (default configuration has only TLS 1.2 enabled.  TLS 1 / TLS 1.1 optionally configurable)