SMTP error – “4.7.0 Temporary server error. Please try again later”

  • Hi
    I have just set up my WP site (WP 5.7.2) and a contactform
    When trying to send a test SMTP message from WP i get an error saying
    “4.7.0 Temporary server error. Please try again later. PRX4 [HE1PR0802CA0006.eurprd08.prod.outlook.com]”

    I am using O365. Have looked into the seetings for SMTP but it doesn′t help.
    Log details:

    220 HE1PR0802CA0006.outlook.office365.com Microsoft ESMTP MAIL Service ready at Sat, 17 Jul 2021 07:49:35 +0000
EHLO digitalwin.se
250-HE1PR0802CA0006.outlook.office365.com Hello [93.188.2.5]
250-SIZE 157286400
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-STARTTLS
250-8BITMIME
250-BINARYMIME
250-CHUNKING
250 SMTPUTF8
STARTTLS
220 2.0.0 SMTP server ready
EHLO digitalwin.se
250-HE1PR0802CA0006.outlook.office365.com Hello [93.188.2.5]
250-SIZE 157286400
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-AUTH LOGIN XOAUTH2
250-8BITMIME
250-BINARYMIME
250-CHUNKING
250 SMTPUTF8
AUTH LOGIN
334 VXNlcm5hbWU6
ZGFnLndpZGVsbEBkd2luLnNl
334 UGFzc3dvcmQ6
U3RhbnN0b3JwMTIzIQ==
451 4.7.0 Temporary server error. Please try again later. PRX4  [HE1PR0802CA0006.eurprd08.prod.outlook.com]

    —————————
    Greatful for your support.
    Br/Dag

    The page I need help with: [log in to see the link]

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