Hi All https://git.ispconfig.org/ispconfig/ispconfig3/issues/3519 look at this thread https://www.howtoforge.com/community/threads/underscore-in-cname-record-solved.68998/ Looks like the regex needs the same fix again in the latest version.
Hi Till Sorry, i am on the 3.0.5.4p8 and had to change interface/web/dns/form/dns_cname.tform.php again.
Seems indeed as if the change got lost in 3.0.5 branch. In 3.1 it is working again, so it should be ok in the next release.
