1 Topic by scruff

  • scruff
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  • Registered: 2018-07-10
  • Posts: 1

Topic: Unable to relay from WAN-client via iredmail smtp server.

Hi eveyone,
I've got newly installed iRedMail v0.9.8 on my Centos v7. I can connect to my server via https://servername/mail and I'm able to send/receive e-mails via WEB-interface. But I what to connect some of external users with MS outlook 2010/2013/2016 using IMAP/SMTP. During MS Outlook account creation at the final step I've got an error : 521 5.7.1 Service unavailable; client [WAN_clentIP_addresses] blocked using barracudacentral.org.
But IMAP connection is successfull (using TLS). Do you know how to allow relay for external users?

Thanks...

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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
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  • Registered: 2009-05-06
  • Posts: 30,793

Re: Unable to relay from WAN-client via iredmail smtp server.

Do you configure Outlook to send email with SMTP authentication?