After Leopard install some Windows users report my Mail messages as Phising

Question

After having installed Leopard I can send emails from Mail but when I send replies to emails received from Windows users they receive error reports explaining my messages are Phishing and thus they do not open them.....
Since more often than a few years ago I am experiencing als sorts of problems similar to those of Microsoft users, I do not understand why Apple is still producing these Gates bashing tv-adds..... I hope though the problems are solved quickly, and trust that Apple will reimburse their customers for doing the work that should have been done by their software testing staff....

Answer 1

No, the issue has been with us all the way through the versions of Leopard -- it is not new to SL and Mail 4.x.
I have not yet tested Mail 4.x for this aspect, but in Mail 3.x, if you used RTF, but only one font, and sent an attachment, Mail would automatically convert to Plain Text. Two or more, it would not. Forwarding was often problematic because multiple fonts were in use, and Mail could not convert to Plain Text.
The issue has always been specific to Outlook and Outlook Express users -- that might extend to the Windows Mail in Vista as well. The same message sent to someone using, say Thunderbird on a PC, including Vista, and no problem.
The MS email clients do not handle Rich Text they receive very well, and when they send in RTF, it is with a proprietary version of RTF that gives some people trouble, although not users of Mail or Entourage.
Ernie