Clamav-unofficial-sigs - GPG key incorrect

I have an issue with downloading the unofficial clamav Signatures:

[root@nethserver ~]# grep -Hri gpg /var/log/clamav-unofficial-sigs/clamav-unofficial-sigs.log
/var/log/clamav-unofficial-sigs/clamav-unofficial-sigs.log:Aug 07 13:19:39 ALERT: Could not download Sanesecurity public GPG key
[root@nethserver ~]#

It looks like that the sanesecurity GPG key is incorrect within the following file:

[root@nethserver ~]# grep sanesecurity_gpg_ /etc/clamav-unofficial-sigs/master.conf
sanesecurity_gpg_url="http://www.sanesecurity.net/publickey.gpg"
[root@nethserver ~]#

Download get stuck here:

[root@nethserver ~]# wget -O - http://www.sanesecurity.net/publickey.gpg
--2020-08-07 14:17:24--  http://www.sanesecurity.net/publickey.gpg
Resolving www.sanesecurity.net (www.sanesecurity.net)... 37.1.96.58, 2a02:700:210::1:1
Connecting to www.sanesecurity.net (www.sanesecurity.net)|37.1.96.58|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: http://sanesecurity.com/publickey.gpg [following]
--2020-08-07 14:17:24--  http://sanesecurity.com/publickey.gpg
Resolving sanesecurity.com (sanesecurity.com)... 185.139.129.91
Connecting to sanesecurity.com (sanesecurity.com)|185.139.129.91|:80... connected.
HTTP request sent, awaiting response... 403 Forbidden: header 'Content-Type' value denied
2020-08-07 14:17:26 ERROR 403: Forbidden: header 'Content-Type' value denied.

[root@nethserver ~]#

Here it works now. Do you still get an error?

This seems to be a firewall topic within our internal network.
Thanks for your feedback