Aucbvax.4793
fa.editor-p
utzoo!decvax!ucbvax!editor-people
Thu Oct 29 14:06:11 1981
Re:  mail systems standards
>From dcrocker@udel Thu Oct 29 13:17:14 1981
The "To:" field is not officially required by the Arpanet standard.
The blank line most certainly IS required.

It would appear that the Berkeley relay mechanism is failing
to massage Unix mail into the required Arpanet format.

Dave