Our add-on cannot access the SMTP port in case you are using your own SMTP server protected by a firewall. In order to work around this, you need to allow certain IP addresses on your firewall. |
Email This Issue is currently running on Amazon EC2 instances. If you are using a firewall to filter incoming connections to your IMAP or SMTP servers, then please add these IP addresses to your firewall configurations based on your cloud instance's residency:
US residency IP addresses:
52.27.95.185/32
54.188.78.95/32
52.12.208.63/32
EU residency IP addresses:
18.158.85.162
3.121.79.174
3.72.199.195