[HUB] Mail delivery fails on Plesk for Linux: Relay Access Denied

This issue occurs while sending a mail message. This error may appear when there is a misconfiguration in mail server/webmail settings. It means that the relay is closed for your IP address.

To fix general issues with mail server configuration, run the following repair utility:

Using Plesk interface

1. Go to Tools & Settings > Scheduled Tasks > Add new
2. Input the command one by one and click Run Now:

   CONFIG_TEXT: /usr/sbin/plesk repair mail
   service pc-remote start

Note: Plesk mail repair may take from 1 minute to few hours.

Using SSH connection

1. Connect to the server via SSH and run the following command:
   • For Plesk 12.5 and Onyx

     # plesk repair mail

   • For other Plesk versions

     # /usr/local/psa/admin/sbin/mchk

2. Make sure that pc-remote service is started:

   # service pc-remote start

3. Try sending mail and if the issue persists, check /var/log/maillog for additional errors and search for the solution in Plesk Knowledge Base

Known issues

• Cannot send email from Roundcube: 4.7.1 Relay access denied
• Mail users cannot not receive messages: Relay access denied
• Unable to connect to the mail server using Atmail: Relay access denied
• Mailman mail list is not working with external mail service: Relay access denied
• Unable to send an email: 554 5.7.1 Relay Access Denied
• Cannot send mail using Outlook: 554 5.7.1: Client host rejected: Access denied