As a rule, I do the following:
1) For BITNET, the userid and node are all uppercased:
e.g. GKM$FAID@QUEENS
2) For internet, the DOMAIN portion (as registered) is upper case, node
names are lower:
e.g. [log in to unmask]
or [log in to unmask]
3) For internet, userids may any mix of upper and lower:
e.g. [log in to unmask]
or [log in to unmask]
** I respect the case as it comes in the message (mail) for signup **
4) For percent hacks, a double rule applies:
e.g. [log in to unmask]
and so on, as required.
/Geert