Error 550 using notification

Hello,

I have a problem using the notifications. The following error occures by sending a testmail (beispiel@beispiel.de is just an example):

--------------------
postfix/smtp[2163]: BAF045ECF: to=<beispiel@beispiel.de>, relay=mail.gmx.net[212.227.17.190]:587, delay=0.79, delays=0.2/0.2/0.38/0.01, dsn=5.0.0, status=bounced (host mail.gmx.net[212.227.17.190] said: 550-Requested action not taken: mailbox unavailable 550 Sender address is not allowed. (in reply to MAIL FROM command)

--------------------

I am using my email as sender adress in the omv configuration. Is there somewhere another option where I can change the sender adress?

Thanks a lot.
Michael

Yes, I am using gmx and I had no problems with OMV 2.x.

looking at /etc/openmediavault/config.xml my "OMV_MAIL_primarymail" is my gmx adress. The log files shows me an email with xyz@localhost.localdomain which seems not to be accepted form gmx. Where can I change this inside OMV?

Thanks a lot.

I am using a fixed ip. My router uses dhcp. The difference to OMV 2.x I used before is the fixed ip.

This is my network configuration:

# Wired adapter #1
allow-hotplug eth0
#no-auto-down eth0
#iface eth0 inet dhcp
iface eth0 inet static
        address 192.168.0.20
        netmask 255.255.255.0
        gateway 192.168.0.1
#       hwaddress ether # if you want to set MAC manually
#       pre-up /sbin/ifconfig eth0 mtu 3838 # setting MTU for DHCP, static just: mtu 3838


# Wired adapter #2
#allow-hotplug eth1
#iface eth1 inet dhcp
#       hwaddress ether # if you want to set MAC manually
#       pre-up /sbin/ifconfig eth0 mtu 3838 # setting MTU for DHCP, static just: mtu 3838


# Wireless adapter #1
#allow-hotplug wlan0
#iface wlan0 inet dhcp
#       wpa-ssid SSID
#       wpa-psk xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
# to generate proper encrypted key: wpa_passphrase yourSSID yourpassword


# Local loopback
auto lo
iface lo inet loopback

I am running a bananapi with armbian jessy. If I switch back to dhcp and sned a notification test mail the error is still the same? Using OMV 2.x everything works fine.

Any ideas? Thank you.