On Sat, 11 Mar 2023 12:57:11 +0100, "Peter N. M. Hansteen via mailop"
<[email protected]> wrote:

>Hi,
>
>Since some time yesterday I've seen a largish number of delivery attempts to
>obviously generated, invalid addesses in some of our domains, with the 
>following
>apparent senders:
>
>[email protected]

[snip]

Looking for "RCPT TO:<catchalladdresscheck@" will give you a trove of other
source domains/IPs.  There's a nest of them at 204.141.232.0/24, for instance.

mdr
-- 
   "There will be more spam."
      -- Paul Vixie

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