Cal-Dav - Mass cancel meeting emails were sent

simz8

Registered
Feb 17, 2022
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Greece
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Root Administrator
Hello,
recently one of the email users who is using CalDav for a couple of years faced the following problem. A bunch of emails (around 150) were sent to meeting collaborators, regarding old meetings(some of them dating two years ago).
The emails were proper Cancel meeting events with subject : "Cancelled : The name of the meeting"
When we took a look at the email headers, it seemed that this was sent by "User-Agent: Kronolith H5 (4.2.24)" which is the HORDE webmail if i am not mistaken.
This user does not use HORDE webmail for organizing meetings but only Outlook and a corresponding caldav plugin.

Do you have any idea on why this could be happening?

P.S. I am using CPANEL / WHM version v80.0.15. I know it's old. I plan to update in the next couple of days.
 
Last edited:

cPRex

Jurassic Moderator
Staff member
Oct 19, 2014
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Hey there! I don't have a good explanation for why that would randomly happen, but if you checked the mail log directly (/var/log/exim_mainlog) does it give you any additional clues on what user may have triggered these?