Open port 587 in postfix

The isp of some user were using port 587 instead of the standard port 25. In newer postfix versions it is very easy to make postfix listen on the submission port. To enable it I only had to change my /etc/postfix/master.cf and uncomment the following line:

submission inet n - n - - smtpd

Sorry, your helo has been denied

This is the mail system at host server01.

I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can delete your own text from the attached returned message.

The mail system


host mx1.gmx.net[213.165.64.102] said: 550-5.7.1 {mx%}
Sorry, your helo has been denied. 550 5.7.1 (
http://portal.gmx.net/serverrules ) (in reply to RCPT TO command)

the solution was to edit the postfix main.cf change myhostname

openbsd-inetd

After I tried to restart inetd with the following command:

/etc/init.d/openbsd-inetd restart

I received the message:

Not starting internet superserver: no services enabled

Then I typed this:

apt-get install xinetd

After the installation the restart works