ALTER TABLE `school_setup` 
ADD COLUMN `tls_mail_sst` ENUM('YES','NO') NOT NULL DEFAULT 'NO' AFTER `ssl_mail_sst`;

/*  
Parametros de configuracion para exchange

Outgoing Mail (SMTP) Server:

smtp.office365.com

587

TLS*/

-- sugerencia de configuracion OJO!! solo para exchange

UPDATE `school_setup` SET host_mail_sst='smtp.office365.com', port_mail_sst='587',tls_mail_sst='YES', ssl_mail_sst='NO', from_mail_sst='', user_mail_sst='',pswd_mail_sst='';