The From header is supposed to have a space between the display name and the address.
It's just a convention for better readability.
RFC 5322 section 3.4.:
address = mailbox / group
mailbox = name-addr / addr-spec
name-addr = [display-name] angle-addr
angle-addr = [CFWS] "<" addr-spec ">" [CFWS] /
obs-angle-addr
Omission of that space is a fair spam indicator.
I guess so. Mark
