Problem with Contact Us page - Joomla! Forum - community, help and support

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i've installed joomla settings on server :

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and this setting global configuration :
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but in contact page when want email administrator (myself) , no new messages appears in administration . means won't send email admin .

can u tell me reason ?

is there me out ?

i didn't installed in root in folder named joomla, may cause problem ?

like :

http://www.example.com/joomla





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