The sender of a token-request mail is "noreply@<FQDN DC-Master" this should be changeable via UCRV Ticket#2015111721000667
Added UCRV umc/self-service/passwordreset/email/from_addr with default value of "Password Reset Service <noreply@FQDN>" in commit 65897 (incl YAML).
r65904: UCRV umc/self-service/passwordreset/email/from_addr was renamed to umc/self-service/passwordreset/email/sender_address.
Yes, works with "selfservice@fqdn.local" plus "Password Reset Service <selfservice@fqdn.local>".
<http://errata.software-univention.de/ucs/4.1/24.html>