Hello everyone,
I'm having this strange behaviour with sendmail when I try to send an email using the command line or a mail client to a specific domain: example "dest-domain.com"
My mail server is able to send messages to any other domain.
The same mail server can telnet email.dest-domain.com on port 25 and send emails successfully.
Other mail servers on my network, using another range of IPs can connect and sendmail to dest-domain.com.
When I use the "mail" command to send email, I get the following output:
$mail -v username@xxxxxxxxxxxxxxx Subject: test anything.... -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
