WAA's SMTP server specification method

WAA's SMTP server specification method

WAA Version: 4.3.X
OS: Linux and Windows

[Q1] 
How can I configure multiple SMTP servers to WAA with WAC? 

Answer: You can only set one SMTP. 


[Q2] 
How to specify the listening port number of the SMTP 
server other than the default 25. 

Answer:
- Unchecked with "With Authentication":use port number of 25 
- Checked with "With Authentication":use port number of 587 
- These numbers are fixed. It can not be changed.