I tried TLS enforcement while sending to Volt email servers using Postini's TLS enforcement policies. I get a bounce back message saysing Volt servers do not support end to end TLS enforcement.
The error message is:
Technical details of temporary failure:
Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 451 451 Recipient does not support STARTTLS - psmtp (state 14).
This is very surprising since Volt is a very large technical staffing company. Why wouldn't they want the most secure email possible to protect the identities of their employees and their business communications?
The other odd thing is that I sent to another Volt person and the email seemed to go through. Either that or the TLS failure messages are very delayed and I haven't gotten that failure message yet, which seems odd. Shouldn't the message rejection be immediately available? Isn't there a way to test an email server to see if it supports TLS prior to sending the message so I don't get a whole bunch of failures over time and wastes mail server resources when they continually try to resend when an email server doesn't support TLS?
At any rate not sure why Volt email servers don't support TLS. This seems kind of odd. Additionally a person at Volt could not email me for some reason. There seems to be something strange going on with their mail servers.