Timeout 30s but message sent

2014-12-18 Thread HugoH
Hello, I'm facing a timeout issue on one of my server, which seems to slow message delivery. There is a 30s (exactly 30s) delay while connecting to gmail, gandi, yahoo... servers. But some others haven't this timeout. Here is a sample from my logs : Dec 18 09:07:48 sd-60799 postfix/pickup[84

Re: Timeout 30s but message sent

2014-12-18 Thread HugoH
Hello Christian, Thanks for your reply. I check on my working server and... There's this message : Dec 18 11:09:27 sd- postfix/smtp[3501]: connect to gmail-smtp-in.l.google.com[2a00:1450:400c:c01::1b]:25: No route to host It seem's that my 2nd server detects that ipv6 is not available and use i