En Mon, 19 Oct 2009 05:44:14 -0200, 星星 <starstarstar...@gmail.com>
escribió:
my email smtp server hostname can be parsed to 5 ips, for example:
******************************************************************
my email smtp server hostname: email-my.local.com
ips through dns parse:
1.1.1.1
1.1.1.12
1.1.13.1
1.1.1.14
1.1.1.15
******************************************************************
but when i send mail using smtplib, i was always using one ip, no
dns re-resolve happened, (for example: only use 1.1.1.12). I checked
smtplib src code, but i can't find anything strange;
smtplib does not issue a dns query for a MX record, if that is what you
were expecting. In fact, the Python standard library does not contain any
module for DNS handling.
for i in range(1000):
server = smtplib.SMTP(host)
Here, `host` is used directly -- whatever address gethostbyname returns.
If you want load balancing among the 5 addresses above, you'll have to do
it yourself:
host = random.choice(list_of_addresses)
If you don't want to hardcode the addresses, there are a few libraries
that perform DNS queries in PyPI.
--
Gabriel Genellina
--
http://mail.python.org/mailman/listinfo/python-list
