Added functionality to configure log alerts. Added options to configure external mail server.  When an alert log is hit, email is sent to configured mail address via external mail server.

Changes include sending email via internal mail server too, unable to test the internal mail server. 
Tested external mail server. 
AN(config)#log alert 4 "macpool" "ngurunathan@arraynetworks.com" 3

AN(config)#sh system mail

system mail from "%halert@log.domain"

system mail hostname "%l.alert_pseudo_domain" 0

system mail external server "smtp.gmail.com" 587 1

system mail external user "arraynandita@gmail.com" "XXXXXXXXXIZ9Ie1J5sh0tCp+0jMAHKylAFYLDcS44YzaGuLQaFtU="

system mail external on
Mail received:

arraynandita@gmail.com

​

Nandita Gurunathan​

Caution: This is an external email and may be malicious. Please be careful when clicking links or opening attachments.

CLI: User "array" executed cmd "log alert 4 "macpool" "ngurunathan@arraynetworks.com" 3"

CLI: User "array" executed cmd "sh macpool"