For a while, the constant stream of spam sent from google servers using sender addresses of the form
[a-z]+-bnc[A-Z809]+@dom.ain was restricted to a reasonable set of IP addresses, which I've decided to block completely
as there was no acceptable traffic from them.
Today, however, they seem to have started using new IP ranges for the same old
stuff.
@Google, please note that this will over time lead to reduced deliverability of
legit mail from your users.
If you really want to keep the spamming users, keep them isolated in IP ranges
that are not used for legitimate mail.
You're not too big to block.
Cheers,
Hans-Martin
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