Email header "To" is wrong for event signup confirmation

Created by: temparus

When signing up for an event, an email is sent to the the one adding the event signup.

The receiver (To Header) is set to l, u, t, z, s, a, e, t, h, z, ".", c, h instead of lutzsa@ethz.ch.

The original message below.

Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Subject: [AMIV] Eventsignup accepted
From: <api@amiv.ethz.ch>
To: l, u, t, z, s, a, e, t, h, z, ".", c, h
Message-ID: <32581afb-e7eb-4124-b643-656c6fdbc421@edge10.ethz.ch>
Date: Mon, 18 Feb 2019 09:01:18 +0100
X-MS-Exchange-Organization-AVStamp-Mailbox: SMEXZmb@;1482100;0;This mail has been scanned by Trend Micro ScanMail for Microsoft Exchange;
X-MS-Exchange-Organization-SCL: -1
MIME-Version: 1.0

Hello Sandro!

We are happy to inform you that your signup for AMIV goes Accenture End-2-End was accepted and you can come to the event! If you do not have time to attend the event please click this link to free your spot for someone else:

http://api.amiv.ethz.ch/delete_signup/<token-removed>

Best Regards,
The AMIV event bot

Admin message

Email header "To" is wrong for event signup confirmation