You can't do this in ISPConfig. Google "Spamhaus removal".
Your IP is on a blacklist.
This is a default message and say nothing. Look at the attached message in your mail.
I think there are two cases. 1. There is a problem e.g. create ftp user will failed. You fix this problem in the master branch and you release a...
I think the problem is not the patch. There is a confusion when someone patch the version but the control panel show a warning for an old version....
No. The patch only fix the issue but it doesn't increase the Version number. You must edit the file...
Separate names with a comma.