I had moved my site to a new hosting system. Later, I noticed a strange format of the From field in the email header sent from the system. It looks like that:
From: “\M\Y\S\I\T\E\N\A\M\E.hu” <[email protected]>
The capital letters are ale marked with backslash. The mail format is UTF-8, but on the old system everything was the same, except this. Unfortunately, these marks are shown in some webmail clients exactly like this, which is really not nice, and maybe cared also as spam.
Do You have an idea what can cause this?