Socket - gaierror

[half.italian at gmail.com]

On Aug 27, 12:32 pm, Larry Bates <larry.ba... at websafe.com> wrote:
> half.ital... at gmail.com wrote:
> > Hi all,
>
> > I'm having trouble with the socket module resolving a hostname.  It
> > seems like this is a system level problem, but I'm not even sure where
> > to start.  I can ping the smtp server by name and IP, but when
> > smtp.SMTP("theHost") tries to get the hostname, it keeps giving me the
> > following error:
>
> >   File "bin/program.py", line 123, in notify
> >     smtp = smtplib.SMTP("theHost")
>
> >   File "/usr/lib/python2.4/smtplib.py", line 255, in __init__
> >     addr = socket.gethostbyname(socket.gethostname())
>
> > gaierror: (-2, 'Name or service not known')
>
> > I tried changing to a different smtp server, using an ip instead of a
> > host name.  I could ping both boxes by name oor IP.
>
> > any ideas?
>
> > ~Sean
>
> The specific error shown is a DNS resolution problem.  Based on the
> URL "theHost" smtplib can't resolve to an IP address (which is what
> socket.gethostbyname does).  You don't say what happened when you changed to ip,
> but I suspect it is a different error or some other problem.  Maybe a firewall
> issue (port 25 not open?), but I'm just guessing.
>
> -Larry

Changing it to IP gives me the same exact error...

  File "bin/prgram.py", line 123, in notify
    smtp = smtplib.SMTP("XXX.XXX.XXX.XXX")

  File "/usr/lib/python2.4/smtplib.py", line 255, in __init__
    addr = socket.gethostbyname(socket.gethostname())

gaierror: (-2, 'Name or service not known')

Looks like the smtp port is closed on the client machine...doh Should
have gotten to that!

Thank you.

~Sean