mail problems

[BlueScreenTT]

Hi !

i have used ispcp sinse they took over from vhcs
and i just love it

but now after 1 - 1½ year of working perfektly my server will not take any mails

when i send a mail to a adress on the server the sender get a reply !
----------------------------------------------------------

This is the Postfix program at host mx2.bahnhof.se.

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 Postfix program

<lina@sveg.dk>: host mail.ttsbox.dk[79.136.105.90] said: 550 5.7.1
<lina@sveg.dk>: Recipient address rejected: Your MTA is listed in too many
DNSBLs; check http://www.robtex.com/rbl/213.80.101.12.html (in reply to
RCPT TO command)

<thomas@ttsbox.dk>: host mail.ttsbox.dk[79.136.105.90] said: 550 5.7.1
<thomas@ttsbox.dk>: Recipient address rejected: Your MTA is listed in too
many DNSBLs; check http://www.robtex.com/rbl/213.80.101.12.html (in reply
to RCPT TO command)

<thomas@gjoertz.dk>: host gjoertz.dk[79.136.105.90] said: 550 5.7.1
<thomas@gjoertz.dk>: Recipient address rejected: Your MTA is listed in too
many DNSBLs; check http://www.robtex.com/rbl/213.80.101.12.html (in reply
to RCPT TO command)


----------------------------------------------------------
This is the Postfix program at host mx1.bahnhof.se.

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 Postfix program

<thomas@gjoertz.dk>: host mail.ttsbox.dk[79.136.83.85] said: 550 5.7.1
<thomas@gjoertz.dk>: Recipient address rejected: temporarily blocked
because of previous errors - retrying too fast. penalty: 30 seconds x 0
retries. (in reply to RCPT TO command)

<thomas@ttsbox.dk>: host mail.ttsbox.dk[79.136.83.85] said: 550 5.7.1
<thomas@ttsbox.dk>: Recipient address rejected: temporarily blocked because
of previous errors - retrying too fast. penalty: 30 seconds x 0 retries.
(in reply to RCPT TO command)

<lina@sveg.dk>: host mail.ttsbox.dk[79.136.83.85] said: 550 5.7.1
<lina@sveg.dk>: Recipient address rejected: temporarily blocked because of
previous errors - retrying too fast. penalty: 30 seconds x 0 retries. (in
reply to RCPT TO command)
-------------------------------

WTF :-) what have happend here
i am sooo lost here i have tryed to search for dns black lists but i cant find my adress or ip anywhere

anyone got an idea

Greets
Thomas