I'm quite confused about why this is happening, I'm not sure exactly!
Basically, when a threshold is alerted, via email, the number within the subject line, we believe to be correct, however, the graph doesn't show the same as what the subject does.
For example:
The image which is attached shows as per the attached image.NORMAL: Cab 6 - Traffic - ***** [traffic_in] Restored to Normal Threshold with Value 0.1915
I'm using the latest version of Cacti 0.8.8b, Thold 0.4.9 (I know this is one version out, but the newest version is only minor differences, from what I can see!) and Settings version 0.71
From what I can make out, the image that was attached to the "NORMAL" email, should have been attached to the "ALERT" email, it's like the graphs are being re-generated after the email is sent, so it's not being given the correct graph.
If you need any further information from me, please let me know and I'll be happy to provide.
Cheers,
Matt