Postfix :: Connection Refused

[kisong]

I'm running Postfix. It sends mail to my LISTSERV machine across the network. However, some messages come back as connection refused:

Jan 3 09:26:34 mail postfix/qmgr[1733]: 964C53589FF: to=<NEWSLETTER@STORE.KNIFECENTER.COM>, relay=none, delay=185126, status=deferred (delivery temporarily suspended: connect to STORE.KNIFECENTER.COM[70.88.225.6]: Connection refused)


I get tons (thousands) of these messages a day. Is there a setting in Postfix that is making this connection refused? Or is this something that needs to be fixed on my LISTSERV machine?

I don't know exactly what information you guys will need to get a total picture of this problem. Let me know what information you need.

[till]

Please have a look in the mail logs of STORE.KNIFECENTER.COM, if there are any errors or messages why it blocks the incoming mails.