I'm having issues with the automatic emails my Fritz!Box is sending out. I've set things up on the Fritz so that it's doing SMTP + auth, and it's sending via an email forwarder that I've got set up with my hosting provider (kiwihosting.net). Everything was working up until a week ago, now I'm getting issues.
Here's an example bounce message:
The following message to <fritzbox@redacted> was undeliverable.
The reason for the problem:
5.1.0 - Unknown address error 550-'Server IP 202.37.100.98 listed as abusive. See http://www.linuxmagic.com/power_of_ip_reputation.html for more information. Protection provided by MagicSpam 1.0.6-1.3 http://www.magicspam.com'
Reporting-MTA: dns; mx1.ironport.snap.net.nz
Final-Recipient: rfc822;fritzbox@redacted
Action: failed
Status: 5.1.0
Remote-MTA: dns; [74.53.201.75]
Diagnostic-Code: smtp; 5.1.0 - Unknown address error 550-'Server IP 202.37.100.98 listed as abusive. See http://www.linuxmagic.com/power_of_ip_reputation.html for more information. Protection provided by MagicSpam 1.0.6-1.3 http://www.magicspam.com' (delivery attempts: 0)
202.37.100.98 is the IP address of Snap's Ironport box. 74.53.201.75 is the address of my hosting provider's email server.
I'm not 100% sure, but it looks like my hosting provider is using MagicSpam and is preventing the Ironport box from sending the email. If this is the case, why would Snap's outgoing mail server be seen as "abusive" by a mail reputation service?