That's the probe's 421 result:
> Oct 11 17:19:13 kop01 postfix/lmtp[5711]: E759E301412: to=<adm...@domain.tld>,
> relay=127.0.0.1[127.0.0.1]:2003, delay=13, delays=0/0.01/13/0, dsn=4.0.0,
> status=undeliverable (host 127.0.0.1[127.0.0.1] refused to talk to me: 421
> internal error: OpenResolveAddrFolder failed)
> NOQUEUE: reject: RCPT from jir01.int.domain.tld[ip2]: 450 4.1.1
> <demo.u...@domain.tld>: Recipient address rejected: unverified address:
> host 127.0.0.1[127.0.0.1] refused to talk to me: 421 internal error:
> GetSession failed; from=<j...@domain.tld> to=<demo.u...@domain.tld>
> proto=ESMTP helo=<jir01.int.domain.tld>
And that's the Postfix 450 SMTP server response.
Is that clear now?
Wietse
