SMTP -> FROM SERVER:
220-143-198-90-226.cprapid.com ESMTP Exim 4.98.1 #2 Tue, 29 Apr 2025 20:53:09 +0000 
220-We do not authorize the use of this system to transport unsolicited, 
220 and/or bulk e-mail.
SMTP -> FROM SERVER:
250 143-198-90-226.cprapid.com Hello localhost.localdomain [143.198.90.226]
SMTP -> FROM SERVER:
250 OK
SMTP -> FROM SERVER:
550-Please turn on SMTP Authentication in your mail client. 
550-(localhost.localdomain) [143.198.90.226]:37884 is not permitted to relay
550 through this server without authentication.
SMTP -> ERROR: RCPT not accepted from server: 550-Please turn on SMTP Authentication in your mail client. 
550-(localhost.localdomain) [143.198.90.226]:37884 is not permitted to relay
550 through this server without authentication.

SMTP -> FROM SERVER:
503-All RCPT commands were rejected with this error:
503-Please turn on SMTP Authentication in your mail client. 
503-(localhost.localdomain) [143.198.90.226]:37884 is not permitted to relay
503-through this server without authentication.
503 valid RCPT command must precede DATA
SMTP -> ERROR: DATA command not accepted from server: 503-All RCPT commands were rejected with this error:
503-Please turn on SMTP Authentication in your mail client. 
503-(localhost.localdomain) [143.198.90.226]:37884 is not permitted to relay
503-through this server without authentication.
503 valid RCPT command must precede DATA

SMTP -> FROM SERVER:
SMTP -> ERROR: SMTP server rejected quit command: