QTR-Quadtone RIP

It appears Yahoo may have fixed their problem. To quote their blog:
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Update (8:00 am PST, 3/29): A fix was pushed at midnight (Pacific
Time) that we believe has resolved the problem for messages submitted
after that time. However, it is possible that some users of some
groups may have continued to receive duplicates of messages that were
posted before midnight.
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Happy posting.

Tom Moore