Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Contents Overview Information Requirements…

Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Contents Overview Configuration Inbound …

Disclaimer: This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Contents Overview Requirements Configurations…

Disclaimer : This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Contents Background Phishing to Obtain Login Credentials…

Hi Everyone! Do you have Inbound emails failing to be sent to the M365 email host after configuring Sophos Email gateway mode? If so, please read on. Scenario You have a Microsoft 365 email host as a final destination. After configuring Sophos…

Hi Everyone! Do you have some emails failing to be sent to the Exchange 2019 after configuring Sophos Email gateway mode? If so, please read on. Scenario Used to have only Exchange 2019 (On-Prem) then Central Email Gateway mode is implemented to…

Hi Everyone! Do you ever get an email bounce back with Command Rejected error from Sophos Email protected domains? Here's an example. I sent this from a gmail.com account and got this message back: This number "0010" indicates what went wrong…

Overview Data Loss Prevention (DLP) policy string matching based on keyword and/or regex works only with UTF-8 encoded message. What to do If you observed that it is not working as expected, then first verify the email header to see which encoding…

Hi All, Check out the following article that describes troubleshooting information for common scenarios or issues that customers experience in Sophos Central Email. Sophos Central Email: Troubleshooting common scenarios or issues Regards,

Overview Sophos recommends that its domain ( sophos.com ) be whitelisted in Advanced Threat Protection (ATP) of Microsoft Office 365 to prevent ATP from automatically triggering links in Quarantine Summary sent by Sophos Email. Applies to the following…

Hi everyone, Check out this article that describes steps to submit spam samples and false-positives to Sophos for further analysis when using Sophos Central Email. Sophos Central Email: How to report false positive or false negative spam e-mails…

Hi everyone! Do you sometimes see sender checks like SPF do not work as expected? For example in Sophos Email that it was accepted but sender check failed in the recipient email server? This might be because the checks are not done in the proper…

Hi Everyone! Do you ever get Non-Delivery Report (NDR) notification emails that have "Access Denied" when you try to send an email to the Sophos Email protected domain? Here is how the NDR looks like: This is usually caused by the following: …

Hi Everyone! Do you have issues where outbound emails through Sophos Email's Gateway mode fails and the sender is receiving a Non-Delivery Report (NDR) alert that mentions: "550 5.7.1 Command Rejected" ? Well, you've come to the right place! Symptom…

Hello Community, This is the first post in a series of upcoming Community Recommended Reads for Sophos Central Email (enduser). In this Recommended Read we'll go over the following topics: Setting up Self Service Portal Manage the Allow/Block…

Hi Everyone! I have just encountered a case where a customer have Mailflow mode (as opposed to Gateway mode) where in the sender domain actually have a failed SPF result but was let through in Sophos Email's SPF checking (Action: quarantine) Upon…

Hi Everyone! I have just handled a query where the administrator wanted to revoke Self Service Portal access on a particular user. If you are in this kind of situation, currently the ability to disable access is not present. If you would like this…

Hi Everyone! Do you have issues with user's mailboxes somehow not getting removed from Central eventhough you have deleted the AD user from the Active Directory and synchronized with ADsync tool successfully? Scenario You have Active Directory…

Table of Contents Search & Destroy Sophos SND Quarantine Folder Search & Destroy Search and Destroy, Sophos Email's new post-delivery protection capabilities for O365, is about finding malicious emails already in the mailbox of the users…

Migrating from Central Email Gateway to Mailflow? Here are the documentations that will help: Set up Sophos Mailflow ( Note: Click on the " Existing user " link) Fix conflicts with Microsoft 365 rules Prevent duplicate scans Testing and fixing…

"Note: Please contact Sophos Professional Services if you require direct assistance with your specific environment." This recommended read goes over how to set up Sophos Central Email. This configuration will cover examples of DNAT rules and usage…

Overview Note: Please contact Sophos Professional Services if you require direct assistance with your specific environment. This recommended read outlines the steps to configure Sophos Central email for Gsuite/Goole Workspace. This article covers…

Disclaimer: This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment. Table of Contents Overview Portal Encryption/Secure Message…

Hi Everyone! I have just encountered an issue where in the customer have somehow got a problem with "Delivery Failed" status as soon as they implemented Central Email into their environment. The error they saw in the Message Details is below: Also…

Overview As of January 20, 2021, we have received customer reports of users experiencing "401 access denied" errors when clicking Time-of-click links in emails. If you are experiencing this issue, please raise a support case, attach the affected email…