So I have an IW server up and running since the beginning of this year and very much enjoy the setup. There have been a few little quirks for checking logs and filtering random IP’s that have been hammering the mail server with send to or login requests of invalid addresses, and xmlrpc.php requests trying to flood the server. Other than that, it has been running smoother than any other host I’ve been with.
The question I have today is, all domains are prompted with a “Security certificate cannot be verified” when initially opening Outlook to check e-mails. The accounts have been setup with SSL/TLS but only with the self generated certificate from IW.
To resolve this, I’m assuming that an actual valid SSL cert is needed per domain? or does the “Let’s Encrypt” plugin somewhat alleviate this? As much as I would like to have everything encrypted on each domain, buying that many static IP’s, and certs is just not feasible at this time. Do I have any other options?
I appreciate the help. I did not send a support ticket in as this is not quite a function issue with IW, but general help question.