"Your mail is not compatible with SquirrellMail"

To my report of SquirrelMail fatal errors on opening messages, Support say of the example message:

[quote]…for what ever reason, it’s not compatible with
Squirrelmail. I don’t know what, unfortunately, and since we didn’t
actually write the software, we can’t really say why.


Note to self: must ask all correspondents to sent only messages that are “compatible with SquirrellMail”.