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Unable to browse website through UTM

Smeg
After the company that hosts our website changes the IP address our UTM started throwing a 502 connection refused error going to said website. 

Everything not going through the utm can get to the website without issue.  We have restarted httpproxy, flushed the dns cache, increased the response timeout, increased tunnel timeout, and increased auth timeout. It appears that this website is the only one effected.  Everything else works fine.

 I need advice on where to look next please.


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    Urbana, IL?  If so, I'm right by you.  [:)]  What's your DNS infrastructure look like?  Do lookups return the correct (new) IP?  Anything interesting other than 502 show in the proxy log?  Are you using the proxy in transparent mode or standard?  If transparent, is there any change by adding the site to the transparent destination skiplist?  Is the hoster using any form or filtering or blacklisting?
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    Urbana, IL?  If so, I'm right by you.  [:)]  What's your DNS infrastructure look like?  Do lookups return the correct (new) IP?  Anything interesting other than 502 show in the proxy log?  Are you using the proxy in transparent mode or standard?  If transparent, is there any change by adding the site to the transparent destination skiplist?  Is the hoster using any form or filtering or blacklisting?
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