Dňa 16. februára 2024 21:03:18 UTC používateľ Marco Moock via mailop 
<mailop@mailop.org> napísal:

>Use the VRFY SMTP command for that. If the remote site doesn't provide
>it, they don't want that somebody probes for the mailboxes.

IMO only between own servers, if at all. Disabling it (for public access)
is suggested by RFC 2505 (25 years ago).

>Some dnsbl (e.g. uceprotect) list servers that probe wit RCPT TO.

Of course, one simple cannot use my resources for own security (nor
harvesting)!

regards


-- 
Slavko
https://www.slavino.sk/
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