We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Can't send email from a computer that is not on the same domain as mail server

  • 1 reply
  • 1 has this problem
  • 1 view
  • Last reply by matty85

matty85
matty85
more options

We have just set up a mail server on Amazon. I can send email from the command line fine. I can send and receive email from a PC connected to the Amazon domain with Thunderbird. I can receive email from a PC outside of the mail server (Amazon) domain with Thunderbird, but cannot send mail. I always get a timeout error from a PC outside of the Amazon domain. The SMTP settings are the same between the computers connected to the different domains. All of the necessary ports are also open. Any help would be greatly appreciated.

We have just set up a mail server on Amazon. I can send email from the command line fine. I can send and receive email from a PC connected to the Amazon domain with Thunderbird. I can receive email from a PC outside of the mail server (Amazon) domain with Thunderbird, but cannot send mail. I always get a timeout error from a PC outside of the Amazon domain. The SMTP settings are the same between the computers connected to the different domains. All of the necessary ports are also open. Any help would be greatly appreciated.

Chosen solution

This was an inbound firewall issue after all. Problem solved.

Read this answer in context 👍 0

All Replies (1)

matty85
matty85 Question owner
more options

Chosen Solution

This was an inbound firewall issue after all. Problem solved.