Outlook | Windows | New Outlook for Windows | For business
Using New Outlook on Windows for professional communication and productivity
HI, I am having the same issue. What to do next?
issue with sending email in outlook giving following error code : cf24
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Anonymous
bonjour,
Technical details
SmtpSubmissionPermanent5XXException: Smtp submission failed. Server 'smtp.hostinger.com' Port '465'. --> Unexpected SMTP server response. Expected: 235, actual: 535, whole response: 535 5.7.8 Error: authentication failed: UGFzc3dvcmQ6
Failure code: cf24
Outlook | Windows | New Outlook for Windows | For business
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85 answers
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Anonymous
2024-08-01T19:43:57+00:00 -
Anonymous
2024-08-07T09:14:27+00:00 I'm also having this issue - error code cf24 all emails not sending..
Cannot believe this is taking so long for them to fix...
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Anonymous
2024-08-07T15:18:27+00:00 Having this issue on my desktop only iPhone seems to send fine. But I did send a test email
got the error message but email did send.
Technical details
SmtpSubmissionPermanent5XXException: Smtp submission failed. Server 'smtp.1and1.com' Port '465'. --> Unexpected SMTP server response. Expected: 334, actual: 504, whole response: 504 Authentication mechanism invalid
Failure code: cf24
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Anonymous
2024-08-09T08:06:47+00:00 same issue...here is my error...the only problem is with one gmail account -- I removed it from classic Outlook, and now I cannot add it back (it shows another error). I can send emails from that gmail web but sent emails bounce back from Outlook (both on laptop and phone). Any ideas?
Technical details
SmtpSubmissionPermanent5XXException: Smtp submission failed. Server 'smtp.gmail.com' Port '587'. --> Unexpected SMTP server response. Expected: 235, actual: 555, whole response: 555-5.5.2 Syntax error, goodbye. For more information, go to 555-5.5.2 https://support.google.com/a/answer/3221692 and review RFC 5321 555 5.5.2 specifications. 8926c6da1cb9f-4c8d6987aa4sm3822936173.5 - gsmtp Failure code: cf24 -
Anonymous
2024-08-09T08:57:19+00:00 I am having the same exact issue. Where is Microsoft as it seems lots of people are having this problem. Can't do business this way...