You just need to enter username in to "Forgot password". The system will dispatch email you quoted above. The system won't display email address. There is nothing to worry about.
so anybody could start a system email, so someone sent a spoof reset to your email address, 188.8.131.52 is not from sonsivri site.
so question is why? (your user public details, in forum are not seen by members who have not reached active status, to be able to see your contact details)
Also so, you have the skill? to see IP from where message is from(if not spoofed)
but not to see where [password-reset-link-here] leads to, maybe there is answer.