[IGSMAIL-8773] BKG GNSS Data Center with limited availability

[Erwin Wiesensarter]

Dear Colleagues,

Downloads from https://igs.bkg.bund.de/ (and other BKG services) are only possible from inside Germany right now.

This is because of the current severe security issues with php and the the eMudhra certificates.
It should be available worldwide again on Monday at the latest.
Sorry for the inconvenicence.

With our best regards,
BKG GDC team