> -----Original Message----- > From: Stefano Bagnara [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] > Sent: 26 May 2005 16:25 > To: 'James Users List' > Subject: Re: James configuration advice sought for bulk sending > > > Beware of "tar-pitting" whereby a mail server will > > deliberately slow down data transmission if you attempt to do > > more than one transaction per connection. This is quite good > > at getting rid of spammers because of the way spam tools > > work. Read http://www.palomine.net/qmail/tarpit.html for info > > on the qmail version. > > I simply use a single SMTP connection to send up to 20 mails for the same > domain: I think this is not recognized as tarpit from qmail.
You might be alright as I assume you'll be only doing one MAIL FROM, RCPT TO & DATA per recipient, but lots of that sequence per connection. > > Can I ask how did you solve the single thread per remote IP issue? IIRC a Hashtable (because it's thread safe) and when a thread takes an email it writes the IP address of the host into the hashtable. The next thread along needs to check and if the DNS lookup results in an IP already in the hashtable it throws the email back and gets another one. You do have to be careful so that you don't get the same email back again, so I think I just put a time delay on it so it would get picked up later. I haven't looked in RemoteDelivery for a long time so I could be wrong about the time delay thing. Hope that helps, -- Jason > > Stefano > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
