Thanks for your answer, I know the work around you talk about, but ask this to our user account creation team to "Use default storage quota" is really a source of errors (to see some mailbox with no quotas limit is really an issue )...
if it's an unexpected behavior, why not correct it in a fix or patch ? Webdir 5.0 seems to be postponed often, end of 2007, then mid 2008 (how many time have I heard the "to be resolved in the next release of WebDir" sentence as an answer to my requests ...). So we have to work with an incomplete webdir
fred GUILY
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CA-Synergie Paris