i have installed astaro many times before and have always noticed it dragged my network to its knees. i always knew it was a stupid dns problem but until today I figured out why and it was so simple!if your main External uplink is a static IP you'll probably notice that theres a checkbox under DNS forwarders that says "Use forwarders assigned by ISP". DISABLE IT! (I would say this is valid for the folks that have the the text that says "Currently assigned forwaders: none" which is the case for me) of course add normal dns forwarders but again disable the checkbox to use isp forwaders.once i did my network/system started to actually work right and load pages about 90% faster.i hope the admins would sticky this post and maybe the astaro developers would highlight this issue or make a note of it.
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