On Mon, 2009-02-23 at 20:00 -0500, Joseph Brennan wrote: > 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; > Noted: thanks for the correction.
I hadn't noticed that, only that some MTAs, notably Outlook, accepts and sends out semicolons as separators in a manually entered list of recipients. This causes JavaMail to declare the header to be illegal unless you turn off strict parsing, which is the default. Martin
