On 11.01.22 10:40, Enrico Morelli wrote:
Dear all,

sending mail to some external users I receive this error:

Recipient address rejected: Message rejected due to: domain owner discourages 
use of this host. (in reply to RCPT TO command))

What means?  Is the problem related to my postfix mail server?

looks liks SPF error.
hard to tell more without logs.

--
Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/
Warning: I wish NOT to receive e-mail advertising to this address.
Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu.
My mind is like a steel trap - rusty and illegal in 37 states.

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