Incoming Mail (SMTP/postfix) is running but is not publicly accessible at IP Address:25

1

UFW
ufw status shows

25 ALLOW Anywhere

Postfix Entries
user@box:~# service postfix status

  • postfix is not running

user@box:~# service postfix restart

  • Stopping Postfix Mail Transport Agent postfix
    …done.
  • Starting Postfix Mail Transport Agent postfix
    …done.

user@box:~# service postfix status

  • postfix is not running

Roundcube Errors
An error occurred!
Connection to storage server failed.
Server Error: Empty password

An error occurred!
SMTP Error (451): Failed to set sender "user@example.com"
(4.3.0 Temporary system failure. Please try again later.).

…
I wonder if there is a fix for this apart from waiting?

2

I rebuilt my server and now I get a new error message:
SMTP Error (553): Failed to add recipient "you@gmail.com" (5.7.1 me@example.com: Sender address rejected: not owned by user me@example.com).

3

I see an error in my status check:

This domain’s DNS MX record is incorrect. It is currently set to ‘10 box.example.com.example.com’ but should be ‘10 box.example.com’. Mail will not be delivered to this box. It may take several hours for public DNS to update after a change. This problem may result from other issues listed here.

4

I had tried to instal OpenVPN and I think it was conflicting with sendmail… Problem solved now. Thanks

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