SMTP -> FROM SERVER:220 ns57.hostinglotus.net ESMTP Exim 4.97.1 Sat, 28 Dec 2024 15:03:12 +0700
SMTP -> FROM SERVER: 250-ns57.hostinglotus.net Hello ns57.hostinglotus.net [119.59.120.34] 250-SIZE 52428800 250-8BITMIME 250-PIPELINING 250-PIPECONNECT 250-AUTH PLAIN LOGIN 250-STARTTLS 250 HELP
SMTP -> FROM SERVER:250 OK
SMTP -> FROM SERVER:550 authentication required
SMTP -> ERROR: RCPT not accepted from server: 550 authentication required
SMTP Error: The following recipients failed: whoto@otherdomain.com Mailer Error: SMTP Error: The following recipients failed: whoto@otherdomain.com

SMTP server error: authentication required