Looking at the command: 'event config', it seems you are manually entering 'smtp.******.net:2555' as smtp server, why is there ':2555' ? Doesn't make any sense.
SMTP mail server are usually in this format: smtp.yourcompany.com (smtp is nothing but your mailhost, in your case 'smtp' is your mail I believe, only you can confer that) or, mailhost.abc.co.whatever or, mailhost.abc.com
Just try configuring using "smtp.******.net" as smtp server.