# 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

<p class="callout info">Option to enabled or disable for each of the following</p>

####  

#### IMAP Access

- IMAPS (port 993)

<p class="callout info">IMAP (port 143) is disabled by default due to it being unencrypted)</p>

####  

#### Active-Sync Access

- HTTPS (port 443)

####  

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

<p class="callout info">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.</p>

- HTTP redirects traffic to HTTPS
- HTTPS (default configuration has only TLS 1.2 enabled. TLS 1 / TLS 1.1 optionally configurable)