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Postfix not sending email
We have an Ubuntu 15.10 server running, we managed to get Postfix and Dovecot set up, however Postfix can not send any email to the outside world. We have checked around and tried a lot of different stuff, but still it is like that.
Thanks for the help.
Nov 27 15:46:00 packer-ubuntu-15-10-amd64 postfix/smtps/smtpd: NOQUEUE: reject: RCPT from 524AC878.cm-4-3d.dynamic.ziggo.nl[22.214.171.124]: 554 5.7.1 <firstname.lastname@example.org>: Recipient address rejected: Access denied; from=<email@example.com> to=<firstname.lastname@example.org> proto=ESMTP helo=<[192.168.178.11]>
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