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Old 30th April 2013, 20:12
till till is offline
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Apr 30 19:52:43 web postfix/smtp[28220]: connect to[2a00:1450:4001:c02::1b]:25: Network is unreachable
seems as if your server tries to connect to google by ipv6 but there is no ipv6 network connection possible.

Try to set:

inet_interfaces = IPV4

in postfix to force postfix to use ipv4
Till Brehm
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