• Our team is looking to connect with folks who use email services provided by Plesk, or a premium service. If you'd like to be part of the discovery process and share your experiences, we invite you to complete this short screening survey. If your responses match the persona we are looking for, you'll receive a link to schedule a call at your convenience. We look forward to hearing from you!
  • The BIND DNS server has already been deprecated and removed from Plesk for Windows.
    If a Plesk for Windows server is still using BIND, the upgrade to Plesk Obsidian 18.0.70 will be unavailable until the administrator switches the DNS server to Microsoft DNS. We strongly recommend transitioning to Microsoft DNS within the next 6 weeks, before the Plesk 18.0.70 release.
  • The Horde component is removed from Plesk Installer. We recommend switching to another webmail software supported in Plesk.

Mail relay security

GeraldHi

New Pleskian
Does anybody know, when Postfix on Plesk 10 relays mail to other servers, is the text body encrypted?

For example:

Sender's Laptop -> Sender's Server -> Recipient's Server -> Recipient's Laptop

1. Sender's Laptop -> Sender's Server
This goes from the Sender's Laptop via SSL/TLS to the Sender's Server. The email is safely encrypted during transmission, and exists only temporarily on the server in plain text (assume that Sent mail is saved on peoples' laptops, not the server).

2. Sender's Server -> Recipient's Server
In this step, is the email encrypted?

Secondly:

In my logs of Sender's Server -> Recipient's Server, I have this in the logs:

"certificate verification failed for [subdomain of Recipient's Server] untrusted issuer [details of issuer]"

Did it go ahead and transmit the message encrypted using the unverified certificate or did it just transmit in plain text?
 
Back
Top