Ports (Security group configuration) in amazon for our email server.
Port number
22
80
443
53
25
587
993
995
4190
description
SSH : Secure connection to
control your machine from SSH
client (putty)
HTTP (Web interface protocol)
HTTPS
Secure web protocol ,used to
encrypt connection between
client and server using SSL/TLS
certificates
DNS (domain name
system):used to resolve IP to
names
SMTP , protocol used to send
emails
SMTP submission
MSA (message submission
agent) port.
IMAPS
POP3S
Sieve
Need
Required
Required
Optional (Required if you want
to enable SSL/TLS Security)
Required
Required
Optional, required if you want
25 is blocked. Choose between
25 and 587
Required for secure clients
Required for secure clients
Required
0
