I want to send an email to an specific email server. The MX records of the domain do NOT point to this server, but the receiving server is configured to receive emails of the domain under test, let's say [email protected]
(Background: This is a migration scenario. We are using the old mailserver and want to switch to the new one as soon it is working as expected)
Now, when I use my Linux/Mac/Windows client from a dial up line, how can I directly send an email to the MX? I guess most email servers are configured to not accept emails from dial-up lines, right?
I cannot use the SMTP server of my provider, because this server would send my emails to the official MX of this domain which points to somewhere else.
How can I send test mails?
Thank you, schube