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I want to send a mail to a user which email adress ends by @thinc.local, as I can't send this mail the usual way (for instance gmail discusses with Google MX server which doesn't recognize this address), I had to find a mail server which host this email address.
So I connected in SMTP (telnet IP_add 25
) to different servers and I checked with VRFY or EXPN command if the email address was hosted by the server or not.
I had one server which responded "positively":
To VRFY henry
:
252 <henry@thinc.local>
To EXPN henry
:
250 <henry@thinc.local>
I know the IP_addr of the mail server AND the domain name (barry.thinc.local). So I tried to send an email to henry@thinc.local by adding this server to the outgoing SMTP server list in Thunderbird (I chose no security or authentication method, maybe this is a problem). But I still get a Delivery Status code message back.
I would like to have your opinion, because I'm feeling that I missed something.
P.S: I'm working in a training environment, so don't need to ask if I'm doing something illegal ;-)