Mail unable to connect SMTP using IPv6

Hello,
apparently Tiger's Mail is unable to post to SMTP server using IPv6. This is a big issue here as all the University WiFi access uses IPv6.
Comments and experiences appreciated.

Jean-Luc,
Please give me some general feel and description of how the SMTP is setup, and authenticated in the other mail clients with which it works? What mail clients in particular work with it -- I can perhaps get an idea about what would be needed, if anything, to be different in the setup, when I look at the preference options available in the other mail clients.
Is the Username for setting up the SMTP authentication derived from the longer addresses used in iPV6? My initial research is that normally any issues would manifest in other functions, as well, but the following linked Topic has some discussion specific to Mail:
http://discussions.apple.com/thread.jspa?messageID=1660084&#1660084
I am sorry to not be more helpful.
Ernie

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