Reports with umlauts in the subject line

@mritzmann wrote:

Hi!

• We have websites names with umlauts
• The umlauts end up in the subject of e-mail reports
• Sending is done with Postfix 2.11x (default on debian 8)
• Webserver: nginx/1.14.2
• PHP Version: 7.2.16

The problem is now: The e-mail server (here postfix) does not accept e-mail headers that are not correctly encoded. In this case, the subject.

Reason for bounce:

Reporting-MTA: dns; ****
X-Postfix-Queue-ID: 71E9F40059
X-Postfix-Sender: rfc822; postmaster@***
Arrival-Date: Mon, 18 Mar 2019 10:19:37 +0100 (CET)

Final-Recipient: rfc822; ***@***
Original-Recipient: rfc822;***@***
Action: failed
Status: 5.6.7
Diagnostic-Code: X-Postfix; SMTPUTF8 is required, but was not offered by host

(Note: The Postfix option smtputf8_enable is only available from Postfix 3.x on)

Interestingly, the problem only occurs on this one Matomo installation. All other Matomo installations that use the same mail gateway and the same environment (even on the same server) do not have this problem.

Are there any settings on Matomo’s part that can be made to deal with the correct encoding of email?

Thanks,
Markus

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