1 Topic by paulreynand

  • paulreynand
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  • Registered: 2011-08-09
  • Posts: 1

Topic: Authentication failed on Outlook Mac User

- iRedmail 1.1 (latest)
- Downloadable installaer
- CentOS 7 (1908)
- MySQL
- NGINX

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Hi,

I'm having an issue to my mac users that uses Outlook. After a fresh install of the latest version. Mac users having an error "Authentication failed because Outlook doesn't support any of the available authentication methods."

In the maillog this what i see.


Mar 27 15:13:16 mail postfix/submission/smtpd[29274]: SSL_accept error from unknown[x.x.x.x]: lost connection
Mar 27 15:13:16 mail postfix/submission/smtpd[29274]: lost connection after STARTTLS from unknown[x.x.x.x]


They use port 587 on their outgoing. What's the solution for this?


Thanks and Regards,
Paul

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Spider Email Archiver: On-Premises, lightweight email archiving software developed by iRedMail team. Supports Amazon S3 compatible storage and custom branding.

2 Reply by ZhangHuangbin

  • ZhangHuangbin
  • ZhangHuangbin
  • iRedMail Developers
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  • Registered: 2009-05-06
  • Posts: 31,088

Re: Authentication failed on Outlook Mac User

With port 587 and TLS (or STARTTLS), it should work out of box.
Please double check Outlook settings.