Postfix 'loops back to myself' error
 

I am having this error:
-------------------------------------------
This is the mail system at host mail.myserver.net.

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

<john@mail.myserver.net> (expanded from <admin@myserver.net>): mail for
mail.myserver.net loops back to myself
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My postfix aliases file:
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# /etc/aliases

mailer-daemon: postmaster
postmaster: john, me@myisp.net
hostmaster: john, me@myisp.net
webmaster: john, me@myisp.net
admin: john, me@myisp.net
abuse: john, me@myisp.net
john: john, me@myisp.net
information: william
-------------------------------------------

Some of my main.cf file:
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myhostname = mail.myserver.net
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = myserver.net, localhost, localhost.localdomain
relayhost =
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This is the exact setup I have on another server, but I don't get the loop back problem.
Somehow postfix seems to be expanding the user john mail to include the 'mail.' in
the address (john@mail.myserver.net). Not sure what is causing that. My DN points
directly to my own DNS Server. Any suggestions?

Thanks.

This fixed it:
mydestination = myserver.net, localhost, mail.myserver.net

Strange that it worked the other way in my other server.