Dell IDRAC smtp email can be a little tricky , do not why they didn’t create one screen for all the setting regarding. when getting this error :
![](https://itsimple.info/wp-content/uploads/2023/02/IDRAC-error225.jpg)
It can be one of those unexplained error. thought you want to check first firewall access to your smtp server !
You should also check if the smtp server support starttls as the IDRAC smtp mechanism always try to connect with encryption by default. The way to cancel it , on older version of IDRAC, is to cancel the authentication, which mean that your smtp security need to be base on IP or some other way.
![](https://itsimple.info/wp-content/uploads/2023/02/IDRAC-smtp-authentication.png)
On newer version of IDRAC (9 and above) you can disable it through SSH, connect to IDRAC and issue :
racadm set idrac.RemoteHosts.ConnectionEncryption None
Another impotent setting is the static domain name (the sender domain name) and the email from which the alert will come (IDRAC name):
![](https://itsimple.info/wp-content/uploads/2023/02/IDRAC-dmain-setting-1024x572.png)
Now you can adjust the setting on the alert page and the email recipient for the alerts :
![](https://itsimple.info/wp-content/uploads/2023/02/IDRAC-Alerts-1024x604.png)
And the recipent :
![](https://itsimple.info/wp-content/uploads/2023/02/IDRAC-Recipient.png)
More information can be found here :
Good Luck