Yahoo, itself, sometimes eats messages and never spits them back out. This could be a fault of Yahoo and not the moderators.
However, if your question is breaking one of the group rules (see the group homepage on Yahoo for the rules) or it is posting misinformation, or is disrespectful or trolling in some way, it may not be posted.
is there a reason why my question is not being posted? it's a legitimate question! where is it and why isn't it being posted?