- Products
- Network Security
Next Generation FirewallNext-generation firewall for SMB, Enterprise, and Government
Security ServicesComprehensive security for your network security solution
Network Security ManagerModern Security Management for today’s security landscape
- Advanced Threat Protection
Capture ATPMulti-engine advanced threat detection
Capture Security applianceAdvanced Threat Protection for modern threat landscape
- Access Security
Cloud Edge Secure AccessDeploy Zero-Trust Security in minutes
Secure Mobile AccessRemote, best-in-class, secure access
Wireless Access PointsEasy to manage, fast and secure Wi-FI
SwitchesHigh-speed network switching for business connectivity
- Email Security
Email SecurityProtect against today’s advanced email threats
- Cloud Security
Cloud App SecurityVisibility and security for Cloud Apps
Cloud Firewall (NSv)Next-generation firewall capabilities in the cloud
- Endpoint Security
Capture ClientStop advanced threats and rollback the damage caused by malware
Content Filtering ClientControl access to unwanted and unsecure web content
- Product Widgets
- Product Menu Right Image
- Network Security
- Solutions
- Solutions Widgets
- Solutions Image Widgets
- Solutions Widgets
- Partners
- Partner Widgets
- Partners Image Widgets
- Partner Widgets
- Support
- Support Widget
- Support Image Widgets
- Support Widget
- Products
- Network Security
- Next Generation FirewallNext-generation firewall for SMB, Enterprise, and Government
- Security ServicesComprehensive security for your network security solution
- Network Security ManagerModern Security Management for today’s security landscape
- Advanced Threat Protection
- Capture ATPMulti-engine advanced threat detection
- Capture Security applianceAdvanced Threat Protection for modern threat landscape
- Access Security
- Cloud Edge Secure AccessDeploy Zero-Trust Security in minutes
- Secure Mobile AccessRemote, best-in-class, secure access
- Wireless Access PointsEasy to manage, fast and secure Wi-FI
- SwitchesHigh-speed network switching for business connectivity
- Email Security
- Email SecurityProtect against today’s advanced email threats
- Cloud Security
- Cloud App SecurityVisibility and security for Cloud Apps
- Cloud Firewall (NSv)Next-generation firewall capabilities in the cloud
- Endpoint Security
- Capture ClientStop advanced threats and rollback the damage caused by malware
- Content Filtering ClientControl access to unwanted and unsecure web content
- Product Widgets
- Product Menu Right Image
- Network Security
- Solutions
- Solutions Widgets
- Solutions Image Widgets
- Solutions Widgets
- Partners
- Partner Widgets
- Partners Image Widgets
- Partner Widgets
- Support
- Support Widget
- Support Image Widgets
- Support Widget
SMTP auth fails with '550 5.7.1 client does not have permissions to send as this sender'
12/20/2019 
765 People found this article helpful
135,400 Views
Description
In some cases where SMTP AUTH commands are sent to the downstream mail server, Email security will fail if configured to use MTA mode and the recipient mailserver (Exchange) is not utilizing the option Manage Send as permission for the mailbox in question. In most cases, this will pertain to the outbound mailflow as rarely would SMTP Auth be enabled for inbound. With that being said, the caveat is not path specific and is a general consideration when facing SMTP AUTH and an Exchange facing recipient path.
Version Applicable: 8.3
Resolution
This is a configuration issue with the downstream Microsoft Exchange server.
- Open the Exchange Management Console.
- In the console tree, click Recipient Configuration.
- In the result pane, select a recipient.
- In the action pane, click Manage Send As Permission (or right-click Properties on the recipient).
- On the Manage Send As Permission page, select the users or groups to which you want to grant the Send As permission.
- Click Add button to open the select User or Group dialog box. Use this dialog box to select the users or groups to which you want to grant the Send As permission.
- On the Completion page, review the following, and then click Finish to close the wizard:
- A status of Completed indicates that the wizard completed the task successfully.
- A status of Failed indicates that the task wasn't completed. If the task fails, review the summary for an explanation, and then click Back to make any configuration changes.
- Click Finish close the wizard.
ISSUE ID:
171124
Related Articles
- Generate & Import a SSL certificate (PKCS#12) file for import on an Email Security appliance
- Windows Defender Smartscreen in Edge is blocking SonicWall's Rewritten Sandboxing URL
- How to manually create FTP backup from CLI - Email Security appliance
Categories
- Email Security > Email Security Appliance
- Email Security > Email Security Software
- Email Security > Hosted Email Security
YES
NO