Michael Gratton created an issue: 
https://gitlab.gnome.org/Infrastructure/Infrastructure/-/issues/417



Hi,

I can't currently send a release announcement to gnome-announce-list at the 
moment because smtp.gnome.org is blacklisting mail servers based on the 
Barracuda RBL:

> <[email protected]>: host smtp.gnome.org[8.43.85.24] said: 554
>     5.7.1 Service unavailable; Client host [103.1.187.88] blocked using
>     b.barracudacentral.org;
>     http://www.barracudanetworks.com/reputation/?pr=1&ip=103.1.187.88 (in 
> reply
>     to RCPT TO command)

As someone who runs their own mail server I understand the need to block spam 
at the SMTP level, however I would suggest that giving a private American 
company that is subject to no oversight control over who can and can't sent 
email is perhaps a bad idea.

Rather than blacklisting mail servers based on RBLs in general and Barracuda's 
in particular, smtp.gnome.org should grey list instead, which will be just as 
effective in blocking spam, however will still allow legitimate mail servers to 
route around censorship by arbitrary, unaccountable organisations such as that.

Thanks!

-- 
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