Today we were contacted by the POLICE because a customer filled a complaint against us about a serious e-mail privacy issues.
We still can't believe what he discovered.
Since we updated from 7242 to the new public release, every mail he is sending from the webmail is saved in the "Sent items" folder... of ANOTHER customer mailbox!
The other customer warned him about this and they both are taking this privacy issue very seriously and so are we.
After having a contact with them, we were able to verify their claims and reproduce this.
The only similarity of both accounts is the mailbox name. Customer "A" mailbox is email@example.com and customer "B" mailbox is firstname.lastname@example.org.
We now need to:
1) Have a complete understanding of why/how this is happening
2) Have a way to fix the issue ASAP!
3) Have a way of verifying all accounts that are affected by this
4) Inform all our customers about the problem, what it means for their e-mail privacy and how we are resolving it
This is an emergency issue and it has a total priority on all other open tickets that we have opened.
Thank you in advance.