KB3129: How to enable an SMTP logging in Veeam ONE
https://www.veeam.com/kb312920.03.2020 · This article describes optional logging of dialogs between Veeam ONE Monitor and SMTP servers on sending Alarm notifications or summary. Cause In some cases, it might be required to have detailed logging of this activity for troubleshooting such things as missed alarm notification, unexpected content inside the e-mail message or for other purposes.
KB1832: How to collect logs for Veeam Backup & Replication
https://www.veeam.com/kb183219.11.2013 · The following animation demonstrates how to compile logs in Veeam Backup & Replication. In the Veeam Backup & Replication Console, click the Menu button in the top left-hand corner of the GUI and go to [Help]-> [Support Information]. At the Scope step of the wizard, define the scope for logs export. The following are suggested choices based on ...