Strange issue on trying to resolve smtp.office365.com about baseimage-docker HOT 2 CLOSED

This is more likely a problem with your particular network
infraestructure. Aside from that you are running the ubuntu image and
not the phusion/baseimage

On Tue, Jun 3, 2014, at 7:47, Lifepillar wrote:

Hi,

I have a problem that's puzzling me: although I can ping and resolve
smtp.office365.com from inside a container, using netcat just hangs
indefinitely, apparently because it cannot resolve the domain name.
This problem seems to occur only with that specific domain name. To
reproduce:

docker run --rm -t -i ubuntu /bin/bash
ping smtp.office365.com # Ok
netcat smtp.office365.com 587 # Hangs, no messages
netcat 132.245.211.249 587 # Ok
netcat smtp.gmail.com # (for example) Ok

I can reach smtp.office365.com from the host or from a machine on a
different network.

Can you reproduce this? What's going on? I don't even know how to
debug this. Using Docker version 0.11.1, build fb99f99.

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Michel Peterson

References

1. #87

from baseimage-docker.

Sorry for the noise. I'll work it out with sysadmins.

from baseimage-docker.