Martin Gregorie <mar...@gregorie.org> wrote:
The string "Undisclosed recipients:" is actually a legal group address name.
No, it is not. It needs to be closed with ';' to be legal. This... To: Undisclosed recipients:; ... conforms to standard, with or without spaces around the ':' and ';' characters. That's a now-rare variant of an address spec which could possibly be like this... To: List: us...@example.com, us...@example.com; ... where 'List' is the name of the list, and then a list of any number of comma-separated addresses follows, and then ';' ends the list. The undisclosed recipients:; notation, the only case commonly seen, is just a list with no addresses in it. Also somewhat common is... To: Members of the List Blablabla:; ... as written by Listserv. Joseph Brennan Lead Email Systems Engineer Columbia University Information Technology
