Please enable TLS on the GMP mailserver

[John Scott]

Hi,

The GMP mailserver is the only mailserver I come across that still doesn't have TLS enabled. Although confidential information is not exchanged with the mailing lists, it is increasingly common for mail providers to enforce a TLS-only policy, as the exceptionally few mailservers that don't support it are outweighed by the ramifications of TLS downgrade attacks.

Thus, even if it isn't strictly necessary for the GMP mailservers to use TLS, this is the exception rather than the norm and it would create a lot less friction if it were enabled. Let's Encrypt certificates are free of charge.

Thanks
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