> >nc: connect to rrmx.imp.ch. port 25 (tcp) failed: Network is unreachable
> >nc: connect to rrmx.imp.ch. port 25 (tcp) failed: Network is unreachable
> >nc: connect to rrmx.imp.ch. port 25 (tcp) failed: Network is unreachable
> >
> >So maybe AWS SES is trying to connect to the IPv6 address and cannot?  
> 
> I see the same thing, three AAAA records that point to servers that
> refuse port 25 connections.  That is a problem.
> 
> Either make the v6 servers work or get rid of the AAAA records.

Hi, this is very odd, could you send a traceroute to those IPv6
destinations? I can confirm the servers do NOT refuse IPv6 connections.
I suppose there is a transit problem from certain ISP.

Mit freundlichen Grüssen

-Benoît Panizzon-
-- 
I m p r o W a r e   A G    -    Leiter Commerce Kunden
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