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SMTP host lookup did not complete

I've upgraded the asl to 5.1 and now all outgoing mail stays in the proxy content. All of the messages show the following problem: 
"recipient adress" R=dnslookup defer (-1): host lookup did not complete 

I've enabled "Deny RCPT Hacks" and "Verify recipient" on the SMTP proxy


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  • check your DNS settings on ASL and what ever does your DNS resolution...
    thats not a ASL problem ... ( only if you have missconfigured  the DNS proxy)
    also you should have a rule in the ASL permitting DNS