SERVER -> CLIENT: 220 sxb1plsmtpa01-06.prod.sxb1.secureserver.net :SMTPAUTH: GuS8v2WgVHGIn : ESMTP server sxb1plsmtpa01-06.prod.sxb1.secureserver.net ready
CLIENT -> SERVER: EHLO Ahmed
SERVER -> CLIENT: 250-sxb1plsmtpa01-06.prod.sxb1.secureserver.net hello [154.179.6.18], secureserver.net
250-HELP
250-AUTH LOGIN PLAIN
250-SIZE 30000000
250-PIPELINING
250-8BITMIME
250-STARTTLS
250 OK
CLIENT -> SERVER: STARTTLS
SERVER -> CLIENT: 220 Ready to start TLS
CLIENT -> SERVER: EHLO Ahmed
SERVER -> CLIENT: 250-sxb1plsmtpa01-06.prod.sxb1.secureserver.net hello [154.179.6.18], secureserver.net
250-HELP
250-AUTH LOGIN PLAIN
250-SIZE 30000000
250-PIPELINING
250-8BITMIME
250 OK
CLIENT -> SERVER: AUTH LOGIN
SERVER -> CLIENT: 334 VXNlcm5hbWU6
CLIENT -> SERVER: [credentials hidden]
SERVER -> CLIENT: 334 UGFzc3dvcmQ6
CLIENT -> SERVER: [credentials hidden]
SERVER -> CLIENT: 535 Your message wasn't delivered because your client settings need to be updated to Microsoft Exchange. For more info see https://www.secureserver.net/help/article/update-my-email-settings-to-exchange-32395?pl_id=3153&prog_id=3153
SMTP ERROR: Password command failed: 535 Your message wasn't delivered because your client settings need to be updated to Microsoft Exchange. For more info see https://www.secureserver.net/help/article/update-my-email-settings-to-exchange-32395?pl_id=3153&prog_id=3153
SMTP Error: Could not authenticate.
CLIENT -> SERVER: QUIT
SERVER -> CLIENT:
SMTP ERROR: QUIT command failed:
SMTP Error: Could not authenticate.
ERROR: SMTP Error: Could not authenticate.