troubling message about outgoing.verizon.net

[lch80]

I am using a Mac and my email is the apple email utility.  Recently I received a message from Verizon asking me to upgrade encryption on my fios router, and I did so.  At about the same time (before as well as afterwards) I started to get a message when I try to send an email that says, in effect, "outgoing.verizon.net" is invalid because the license has expired.  There is a button to click to override, but I'm concerned that this may be just a warning before a total shutdown.  I find the process of getting help from Verizon quite opaque.  Has anyone had this message? Do I need to deal with it?  If nothing else, it's annoying because it makes an extra keystroke.

[tns2]

They started telling everyone to change away from outgoing.verizon.net MORE THAN a year ago.

See http://www.verizon.com/emailsettings

They old email servers are being shutdown.  NOt surprised you see an expired message.