I had to upgrade my PC Eudora to get it to work. I assume Outlook has analogous fields that will make it function properly:
I set up a "relay personality" in Eudora, simply called "relay," with the following properties:
Return address: [my normal, non-Verizon e-mail address]
Login name:
xxxxxxxxxx@vzwmail.net
SMTP server: smtp.vzwmail.net
"Authentication allowed" and "Use relay personality, if defined" both checked
Secure Sockets when Sending: "If available, STARTTLS"
Then, in my normal e-mail account settings, I have...
Return address: [my normal, non-Verizon e-mail address]
Login name: [non-Verizon login]
SMTP server: [non-Verizon SMTP]
"Use relay personality, if defined" is checked - so all the settings for "relay" (including the Verizon SMTP server) get used when I send mail.
Secure Sockets when Sending: Never
Then, under Tools / Options / Sending Mail, "SMTP Relay Personality" is set to "relay."
So I never actually send mail through my own SMTP server - it's always through Verizon's - but I haven't had a problem since. The Verizon SMTP server sometimes won't send an attachment that's over 3MB or so, so I have to go into mail2web.com and send it that way - but in my case that's rare enough that it doesn't bother me.
Cheers,
Seth