I couldn't send email using Evolution

[Vincent Onelli]

Hello,
I just signed up to Verizon Fios, at first every thing worked OK then 
sending email stop work. I contacted Verizon of corse they do not 
sopport Linux, but since I had the same problem with windows they 
helped me to fix that by changing SMTP "25" to "587" That fix it.
How can I do the same on F14 Evolution I couldn't find any where.
I appresiate some help.
Vinny