I haven't send near 8000 messages yet, but what I did was a
combination of what Malcom suggested. I setup a model to queue the
messages (pickled email.MIMEMultipart) with a priority, and a cron
that runs occasionally to dump N messages per mx domain over time so
the mailing trickles out. to the local mailserver that actually does
the sending. Since the connection to the local mailserver is done
once and messages are batched it should eliminate the overhead of
sending one by one.
Then for bounce detection, import from Mailman and let it check the
POP3 account of the sending account.
I was really surprised at how easy it was. Python has all of the mail
stuff build in, and Mailman adds the bounce detection just by
importing its module. My point is don't be afraid to roll your own
solution, its not hard at all. For example the pop3 check/bounce
detection which might seem complicated is just a few lines of code:
def check_pop3_bounces(server,user,password):
messages=[]
s=poplib.POP3(server)
s.user(user)
s.pass_(password)
resp, items, octets = s.list()
bounced=Set()
# items will be a list of 'MSG ID, SIZE'
for item in items:#[:5]:
id,size=item.split()
resp,text,octets = s.retr(id)
text = string.join(text, "\n")
file = StringIO.StringIO(text)
message=email.message_from_file(file)
addr=BouncerAPI.ScanMessages('somename',message)
s.dele(id) # delete it, we'll forward non-junk
if isinstance(addr,BouncerAPI._Stop):
pass # junk message
elif addr:
for a in addr:
bounced.add(a)
else:
valid_messages.append(message)
s.quit()
return bounced,valid_messages
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