In one of the ET calls https://docs.einsteintoolkit.org/et-docs/Meeting_agenda#2019-12-05 it was reported that Email from (some) GMail servers rejected by mailing list a potential spam. This means that the spam filter rejects some gmail servers and affects colleagues whose institutions use gmail for university addresses.
To fix or at least ameliorate the issue
- possibly add info about this issue on contact website to contact us
- investigate setup of mailing list server