SSL - SMTP/IMAP - How to certificate?
Question asked by Knud Westdorf - September 22, 2017 at 6:30 AM
Unanswered
Hello guys 
 
I have read the article about "SSL" on SmarterMail.
 
I have a question that I hope you can help with.
 
What certificate do I need? I use DigiCert normally. 1 certificate for the mailserver, that holds every domains? 
 
We would like to offer our customers SSL encryption on SMTP / IMAP. We have about 550 customers/domains on our Smartermail 16.x shared mailserver. 
 
I have read the following guide: https://portal.smartertools.com/kb/a3195/configure-ssl-tls-to-secure-smartermail.aspx
 
Hope you can help me. Thanks.

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We use a standard 2048bit, single domain SSL certificate. Instead of each customer/domain connecting with their own mailhost name, they now connect through that one domain name. So, for, example, if your company name were "mydomain.com", you could purchase a cert for secure.mydomain.com. All customers would access webmail through https://secure.mydomain.com and they would use secure.mydomain.com as their incoming and outgoing mail servers (with the appropriate secure ports) when using a mail client.

The setup is very easy. You do the standard SSL install in IIS to secure the webmail and then you export the certificate (as described in the SM documentation) to secure the pop, imap, and smtp connections.

I hope this helps.

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