2021-11-30 17:54:07 SERVER -> CLIENT: 220-ams111.yourwebhoster.com ESMTP Exim 4.94.2 #2 Tue, 30 Nov 2021 18:54:07 +0100 220-We do not authorize the use of this system to transport unsolicited, 220 and/or bulk e-mail.
2021-11-30 17:54:07 CLIENT -> SERVER: EHLO jessespan.nl
2021-11-30 17:54:07 SERVER -> CLIENT: 250-ams111.yourwebhoster.com Hello jessespan.nl [109.71.54.22]250-SIZE 52428800250-8BITMIME250-PIPELINING250-PIPE_CONNECT250-AUTH PLAIN LOGIN250 HELP
2021-11-30 17:54:07 CLIENT -> SERVER: AUTH LOGIN
2021-11-30 17:54:07 SERVER -> CLIENT: 334 VXNlcm5hbWU6
2021-11-30 17:54:07 CLIENT -> SERVER: [credentials hidden]
2021-11-30 17:54:07 SERVER -> CLIENT: 334 UGFzc3dvcmQ6
2021-11-30 17:54:07 CLIENT -> SERVER: [credentials hidden]
2021-11-30 17:54:09 SERVER -> CLIENT: 535 Incorrect authentication data
2021-11-30 17:54:09 SMTP ERROR: Password command failed: 535 Incorrect authentication data
SMTP Error: Could not authenticate.
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2021-11-30 17:54:09 SERVER -> CLIENT: 221 ams111.yourwebhoster.com closing connection
SMTP Error: Could not authenticate.
Message could not be sent. Mailer Error: SMTP Error: Could not authenticate.