On Thu, 4 Sep 2025, Scott Q. via mailop wrote:
Anyone else seeing an uptick lately of Spam e-mails originating from
these ranges ?
34.64.132.0/22
35.240.0.0/13
Mostly e-mails with: Content-Type: text/plain; charset="iso-2022-jp"
What's interesting is that GCP has outbound port 25 blocked by default
yet these hosts are able to do direct-to-mx deliveries.
If anyone from Google is reading this - can you have a look ?
I hope I've got the wrong one of the stick,
but blocking *outbound* port 25 is unlikely to stop much email.
--
Andrew C. Aitchison Kendal, UK
and...@aitchison.me.uk
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