Issues with sending emails to United Internet services
Since 12 March 2021, we have been aware of problems sending emails to United Internet services. This includes both WEB.de and GMX. These problems result in the connection being refused by the server there and it is therefore no longer possible to send emails to these services. This is the equivalent of a temporary rejection, which triggers further transmission attempts on the part of NoSpamProxy.
As this is not a problem for which NoSpamProxy is responsible, we ask you to use the contact form mentioned above to contact the IT team there and actively request an unblocking. According to our current knowledge, this does not happen automatically. This means that you have to take action in any case.
Please keep in mind that in the default configuration of NoSpamProxy
no further attempt is made to send the email after 24 hours and
the original sender is informed that the email could not be delivered.