Emails initiated by Calendly are rejected

Anonymous
2023-06-14T19:39:06+00:00

I have my outlook account(company's custom domain) connected to my Calendly account.

When someone schedules a new meeting with me, they never get an invitation email. Instead I get an email says:
Delivery has failed to these recipients or groups:

******@gmail.comYour message wasn't delivered because the recipient's email provider rejected it.

Diagnostic information for administrators:

Generating server: SN4P221MB0713.NAMP221.PROD.OUTLOOK.COM

******@gmail.com
Remote server returned '550 5.7.708 Service unavailable. Access denied, traffic not accepted from this IP. For more information please go to http://go.microsoft.com/fwlink/?LinkId=526653 AS(7230) [SN7P221MB1009.NAMP221.PROD.OUTLOOK.COM 2023-06-14T10:51:16.079Z 08DB6BF0DF536A28]'

Original message headers:

Received: from SN4P221MB0713.NAMP221.PROD.OUTLOOK.COM
 ([fe80::477f:d9ec:2fdc:2abd]) by SN4P221MB0713.NAMP221.PROD.OUTLOOK.COM
 ([fe80::477f:d9ec:2fdc:2abd%5]) with mapi id 15.20.6477.037; Wed, 14 Jun 2023
 10:51:16 +0000
MIME-Version: 1.0
Content-Type: text/plain
Date: Wed, 14 Jun 2023 10:51:16 +0000
Message-ID:
<******@XXXXXXXXX.NAMP221.PROD.OUTLOOK.COM>
Subject: XXXXXX

If I send a "normal" email to same address(******@gmail.com) from the same outlook address, it's just sent with no peoblems or errors.
Outlook | Web | Outlook on the web for business | Email

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  1. Anonymous
    2023-06-15T01:05:35+00:00

    Hello Ben Amsalem,  Good day!Thank you for posting to Microsoft Community. We are happy to help you.Based on your description This error "5.7.708 Access denied, traffic not accepted from this IP" can happen when you are trying out a Microsoft 365 trial tenant. If you receive this error before you can purchase licenses, contact support to request an exception for the low reputation IP address until you're able to purchase licenses. Reference: Fix NDR error 5.7.700 through 5.7.750 in Exchange Online - Exchange | Microsoft Learn

    If you are using Microsoft business account, you need to contact our support online.

    1. Create a Service Request in the O365 Admin Portal and indicate the request as clearly as possible.
    2. Or you can contact our hotline and we will create a Service Request ticket for you Global Customer Service phone numbers (microsoft.com)

    However, to better understand the issue and provide the correct answer we need more details from you, please kindly provide us the following information. Thank you. -if Calendly is emails service provider you should contact them, because the IP bad reputation

    -if calendry is domain provider and the domain has been has add to Microsoft tenant then you should contact our Microsoft support online

    Please feel free to let us know if there are any questions or if we've got you wrong. We will keep assisting you based on the information you provide. We sincerely appreciate your patience and cooperation. Sincerely,Eben Ezer Tres | Microsoft Community Moderator

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  2. Anonymous
    2023-09-07T18:02:40+00:00

    Hey there!

    In Calendly, you need to switch your notifcations to Email Confirmations. It will need to be done for each event type.

    Don't forget to click Save & Close. Then after that, all notifications for this event type will be sent from ******@calendly.com

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