How to: Enable SNI for Mail Over Port 587 and 465

As of InterWorx version 6.7.1, SNI is possible for mail sending over ports 587 and 465 using the Dovecot MSA. This allows customers to use mail.domain.com as their server in mail clients without security warnings, as long as that domain has mail.domain.com listed on its SSL certificate.

Note

SNI is only available over port 587 and 465. Mail clients that are set to use port 25 will still receive security warnings if using mail.domain.com as the server in mail clients.

Dovecot, and the Dovecot MSA are both enabled by default on new installations of InterWorx. Users on new InterWorx installations may skip to To Set the Ports for SNI.

On existing InterWorx installations, it may be required to covert to Dovecot and enable the Dovecot MSA.

To Convert Courier Mail Services to Dovecot

Note

Converting to Dovecot may cause messages in mail clients using POP3 over port 110 to redownload.

  1. Log into NodeWorx from the browser (https://ip.ad.dr.ess:2443/nodeworx)

  2. In NodeWorx, navigate to System Services > Mail Server > MDA

  3. Click Convert to Dovecot

    convert dovecot mda button

To Enable Dovecot MSA

Note

The MSA option will not appear under System Services > Mail Server until the MDA settings have been converted to Dovecot

  1. Log into NodeWorx from the browser (https://ip.ad.dr.ess:2443/nodeworx)

  2. In NodeWorx, navigate to System Services > Mail Server > MSA

  3. Click Convert

convert to dovecot msa button

To Set the Ports for SNI

  1. Log into NodeWorx from the browser (https://ip.ad.dr.ess:2443/nodeworx)

  2. In NodeWorx, navigate to System Services > Mail Server > MSA

  3. Under Protocols, select the checkbox next to the desired ports

    dovecot msa ports
  4. Click Update