[Pythonmac-SIG] problems with smtplib?

[chris mann]

I'm having problems with the smtplib module on Mac.

if I run the following code on windows or linux it works fine, but fails on
mac:
import smtplib
s = smtplib.SMTP('smtp.myhost.com')
s.helo()

i get the following error:
Traceback (innermost last):
  File "<input>", line 1, in ?
  File "Dev:Scripting:Python 1.5.2c1:Lib:smtplib.py", line 290, in helo
    name=socket.gethostbyaddr(socket.gethostname())[0]
error: host not found

any ideas why this is only failing on Mac?

thanks
-chris