If it appears your local, broadband, IP address has been listed in a Spamhaus Black List (http://www.spamhaus.org/xbl/) then unfortunately this is out of our control. Who provides your Internet connection?
Possible reasons for this are:
- There is/was some form of malicious software on your pc/network. (run anti-virus software to confirm)
- The IP address you have been assigned by your Internet Service Provider was previously used to generate spam (this would depend on your internet connection)
- Or there may be spam coming from your location
- Your broadband provider listed the entire IP range in the policy block list (as is common with dynamic IP addresses).
Possible solutions for this are:
- Ensure you have SMTP authentication enabled on your mailserver (only applicable if the IP address is _not_ listed in the CBL or XBL) For more on this please see here: https://help.blacknight.com/entries/22918271-smtp-authentication
- Change your outgoing mail server to your ISP's outgoing mail server (e.g. if Eircom provides your Internet connection you can use their outgoing mail server which is mail1.eircom.net(double check this before hand))
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