Hi,

We have a problem with Outlook. We can't send mails from Outlook to Hotmail but we can send mails from Thunderbird or webmail to Hotmail.
So I think there is a problem with Outlook. In Outlook we get a relay access denied error.

We checked the log files and found:

Code:
May 12 16:24:00 mx postfix/smtpd[4563]: warning: 83.101.72.17: hostname ip17.91gen0-1.cityconnect.schedom-europe.net verification failed: Name or service not known
May 12 16:24:00 mx postfix/smtpd[4563]: connect from unknown[83.101.72.17]
May 12 16:24:00 mx postfix/smtpd[4563]: setting up TLS connection from unknown[83.101.72.17]
May 12 16:24:00 mx postfix/smtpd[4563]: Anonymous TLS connection established from unknown[83.101.72.17]: TLSv1 with cipher AES128-SHA (128/128 bits)
May 12 16:24:01 mx postfix/smtpd[4563]: NOQUEUE: reject: RCPT from unknown[83.101.72.17]: 554 5.7.1 <testandries@hotmail.com>: Relay access denied; from=<andriessg@mail6.imm.be> to=<testandries@hotmail.com> proto=ESMTP helo=<FlipFlop>
May 12 16:24:04 mx postfix/smtpd[4563]: disconnect from unknown[83.101.72.17]
Thanks in advance!!