A.M. Kuchling wrote:
I've run into a puzzling problem that I can't yet reproduce: our Mailman installation sometimes doubles periods in the HTML portion of a message, sometimes breaking a link or image as a result. Does anyone recall seeing this before?
I've never seen this that I recall.
Look at section 4.5.2 of RFC 2821 (or the same section 4.5.2 of RFC 5321). While this doesn't seem relevant to your example, it's the only thing I can think of that doubles periods.
Possibly, the lines in the message are long and some MTA is breaking them for transmission and a line just happens to get broken so it begins with a period which is doubled, but somehow the receiver doesn't see the line break and doesn't undouble the period.
The fact that this only occurs in HTML is additionally suggestive of long lines being involved.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan