Tickets :: Comment on [#4814] vlad.horde.org timeout after EHLO

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Comment	> This thread might be relevant: > > > > http://msgs.securepoint.com/cgi-bin/get/postfix9904/37.html > > http://msgs.securepoint.com/cgi-bin/get/postfix9904/37/1.html > > > > Basically, it looks like something in the path is filtering ICMP, and > broke PMTU discovery. > > > > I tested by sending ICMP echo request packets with varying sizes. > Anything over 1480 bytes for the total packet size was dropped. I > tested from two different network paths, to verify that it wasn't > something on my end. The two routes share the last 4 hops only: > > > > 19 154.11.4.129 36.329 ms 36.818 ms 36.967 ms > > 20 208.181.86.221 37.716 ms 39.063 ms 41.819 ms > > 21 209.53.254.36 43.078 ms 41.967 ms 41.206 ms > > 22 199.175.137.231 38.667 ms 38.190 ms 36.957 ms > > > > and: > > > > 7 154.11.4.129 143.938 ms 144.835 ms 144.333 ms > > 8 208.181.86.221 197.612 ms 148.102 ms 145.105 ms > > 9 209.53.254.36 145.927 ms 144.991 ms 145.115 ms > > 10 199.175.137.231 145.803 ms 148.961 ms 147.354 ms > >
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