On 18/04/2024 14:05, Marco Moock via mailop wrote:
Am 18.04.2024 schrieb Bill Cole via mailop <mailop@mailop.org>:
I can't say that Spamhaus lists IPs that engage in the abusive
practice of remote sender verification but I would be happy to hear
that they are doing so and CSS+XBL listing is a reasonable expression
of that sort of world-hostile behavior.
If that sender verification includes trying to send an email until
RCPT TO:, this is abusive in many cases and also uceprotect will list
such servers.
I would have to look further into this, but I was under the impression
that Exim uses the VRFY command for callout verification?
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