[squid-users] No DNS Records Error

Sat Jul 1 10:48:49 UTC 2017

Hi
a few days ago working properly squid server ( for more than 15 years)
suddenly got a ERROR in user sides.
they can`t open any site and get NO DNS RECORDS error on browser.
after restarting squid service for a little short time squid works but
after that there is no site browsing.
Squid Service works on ubuntu box too but no browsing.
why it can happen suddenly without any change to server?
regards
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