icedove password problem

[Gary Roach <gary719_list1@verizon.net>]

I had to change the password on my verizon email account. Now verizon 
email refuses to accept email I send to one of my accounts because the 
password Icedove is sending is wrong. How do I go about fixing this. 
Preferences -> Security -> Saved Passwords displays the passwords for my 
other account and my incoming password for the troublesome account but 
none for outgoing.

Gary R.