Which e-mail providers are possible for the registration?

[heinoganda]

An acquaintance of mine would like to register for the MSFN Forum, but he does not get an activation e-mail at "freenet.de" or "mail.de". Is there a blacklisting or whitelisting by e-mail provider?

 

[dencorso]

Yes. Discardable e-mail providers are not accepted. I don't know the full list of unacceptable e-mail addresses, though.