email servere are rejecting proton email

Proton Mail received initial funding through a crowdfunding campaign.

The company also operates Proton VPN, Proton Drive and Proton Calendar. Proton Mail is run by Proton AG (formerly Proton Technologies), which is based in the Canton of Geneva. The service can be accessed through a webmail client, the Tor network, or dedicated iOS and Android apps. It uses client-side encryption to protect email content and user data before they are sent to Proton Mail servers, unlike other common email providers such as Gmail and. Proton Mail (previously written as ProtonMail) is an end-to-end encrypted email service founded in 2013 in Geneva, Switzerland. protonmailrmez3lotcci pshtkleegetolb73fuirg j7r4o4vfu7ozyd.onion ( Accessing link help).Unfortunately, Office 365 Support can't help you fix these kinds of externally reported errors because Office 365 doesn't support PTR record management. Refer to this article for more information and instructions: Change how DNS records are managed with Office 365. If you're using Office 365 to manage your DNS records note that PTR record creation and management isn't supported in Office 365, so you'll have to change your DNS management to a DNS host outside Office 365. Set up or fix your domain's PTR record - If you're the admin for, work with your DNS hosting provider (your domain registrar, Web hosting provider, or ISP) to correctly set up a PTR record for your domain. It appears that the pointer (PTR) record for isn't set up correctly. It appears that the recipient's email server at performed a reverse DNS (rDNS) lookup security check to verify that the IP address the message is coming from is associated with the sending domain, and the lookup failed. Was this helpful? Send feedback to Microsoft. To fix this, forward this non-delivery report (NDR) to your email admin. The recipient's email server at performed a security check against your message and the check failed.

Email servere are rejecting proton email