Amazon web sever SMTP setup for cs cart multivendor platform

Hello, We have a website using cs cart multivendor 4.3.6 platform. Its host on AWS ec2 instance & for control panel we are using webmin/virtualmin Now first please see snapshot cs1 in our admin panel there is three email methods. 1) For In past we are using php mail we already have DKIM records & SPF for that & all emails work very well but now from few day emails are not going thru php mail method so you need to fix this problem & make sure all emails need to go fast . As they work in past . 2) As you know we have AWS ec 2 instance & we already have activated Amazon Simple Email Services (SES) our domain verified there & email sending limit also removed, Now you need to setup SMTP with our cs cart please see snapshot cs2 so we can choice PHP or SMTP & both email method need to work very well . Note : If we use AWS SMTP credentials with our cs cart than please see cs3 there is erro showing & mail not going 3) When we try to connect FTP thru FileZilla than passive mode not working it mean FTP only connected in active mode but we want to fix this issue so passive mode also need to work . If you have any question just ask me Thanks