try using 8.8.8.8 and see if that works.. so you know if that’s related to 
DNS.. I bet it is.. Should be easy fix to test it.. or just do dig google.com 
<http://google.com/> and see if that resolves.. 

Remo 

> On Aug 13, 2019, at 00:16, Biju Jose | WHITES Systems <b...@whitesindia.com> 
> wrote:
> 
> Setup your reverse DNS for the new IP. 
>  
> From: ChandranManikandan [mailto:kand...@gmail.com 
> <mailto:kand...@gmail.com>] 
> Sent: 13 August 2019 12:38
> To: qmailtoaster-list@qmailtoaster.com 
> <mailto:qmailtoaster-list@qmailtoaster.com>
> Subject: [qmailtoaster] deferral: CNAME_lookup_failed_temporarily._(#4.4.3)
>  
> Hi Friends,
>  
> Am using Centos 6 32 bit with qmailtoaster.
> The email was working earlier without any issue.
> I have upgraded the broadband and router last week after that the was bounce 
> back message come like that   deferral: 
> CNAME_lookup_failed_temporarily._(#4.4.3) for all the domain except gmail.
>  
> am running pdns-recursor and /etc/resolve.conf is nameserver 127.0.0.1
>  and qmail toaster is 
> qmailmrtg-4.2-0.qt.el6.i686
> qmailtoaster-release-2.0-1.qt.nodist.noarch
> qmailadmin-1.2.16-0.qt.el6.i686
> qmailtoaster-util-2.0-1.qt.nodist.noarch
> qmail-1.03-0.qt.el6.i686
>  
> All the external domain is in queue.
>  
> Could anyone help me, What issue is there?
>  
> Incoming not a problem from all the external domains, i can received.
>  
> -- 
> Regards,
> Manikandan.C

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