[exim] cannot send mails outside mailbox....

hi
i'm using mailx and ssmtp
i give this command:
echo "Ciao mate" | mail -s "Saluti" -vvv -I ilmioserver@???
and i get the email
i give this command:
echo "Ciao mate" | mail -s "Saluti" -vvv -I segreteria@???
and receive no mail

the output is the very same:

[->] Date: Tue, 27 Dec 2022 20:53:54 +0100
[->] From: nasone@???
[->] To: segreteria@???
[->] Subject: Saluti
[->] MIME-Version: 1.0
[->] Content-Type: text/plain; charset="UTF-8"
[->] Content-Transfer-Encoding: 8bit
[->]
[->] Ciao mate
[->] .
[<-] 250 OK id=1pAG1K-000ei8-1y
[->] QUIT
[<-] 221 directadmin30.fastnom.com closing connection


ssmtp config is this:
mailhub=mail
hostname=ilmionasone.fritz.box
mailhub=mail.federcasapescara.it:587
AuthUser=nasone@???
AuthPass=password
UseTLS=YES
UseSTARTTLS=YES


and mail queue is empty