Despite the settings of my Mail sending server (SMTP), I cannot receive alert mails for my recorder.

Step 1 : Consult these articles for the configuration of the MAil sending server :

GGM CCKITAHD - Receive an email when motion detection is triggered 

GGM KITIP24xx-48xx -How to configure SMTP Server 

You can have problems linked for many reasons :

• Firewall from you Internet BOX. You just need to disable it to perform the test
• Block linked to you Internet Provider  – Please contact your Internet provider if necessary.
• Configuration with your account for Message sending Server

Example :

Sécurity for Gmail account : 

In your account, Choose « Security »

ENABLE: Less secure access to applications

Other Example for Free : 

You have to DISABLE : Outgoing SMTP blocking