cannot send any emails Connection timed out

[Muhamed Asil]

Hi all, My server refused to send any emails through Gmail or any other provider
in Delivery Reports give Connection timed out for Gmail and retry time not reached for any host for 'domain.com' when I'm trying to send to [email protected]

I attached a screenshot

the server hosted on AWS

anyone can assist will be a pleasure

Thanks

 

[andrew.n]

This issue is related to AWS specifically. You either didn't allow SMTP port in Security Groups or AWS blocked the outgoing connections on your server.

Remove port 25 restriction from your EC2 instance

I'm having trouble sending email over port 25 from my Amazon Elastic Compute Cloud (Amazon EC2) instance or AWS Lambda function.

aws.amazon.com

Get in touch with their support and they will be happy to assist you.

 

[nixuser]

are you able to telnet to port 25, to the remote email servers?

 

[cPanelLauren]

It is possible to contact AWS to allow traffic on port 25, you can also set exim to listen on port 26. The documentation here goes over this How do I change my Exim SMTP port from 25?