Hello: Most ISP's SMTP servers limit the amount of concurrent connections from the same source to about 10 or 20. This is intended to prevent automatic spamming and mail bombing runs, or to at least hinder or limit their impact. This is pretty much an industry standard nowadays (along with rejecting connections from dynamic IP addresses).
Making the limit configurable is a good idea, and I would suggest a default limit of no more than 20. Like Arno said in his post, asynchroneous connections to the same server do not necessarily increase performance significantly so it shouldn't matter that much to the user. -dZ. >------- Original Message ------- >From : Veit Zimmermann[mailto:[EMAIL PROTECTED] >Sent : 3/8/2007 6:42:03 AM >To : email@example.com >Cc : >Subject : RE: [twsocket] SMTP connection limit > >Hi Are there providers which limit the number of concurrent SMTP connections? In other words: Do I have to make the maximum number of connections for asynchronous operation flexible and what would be a good practice approach (besides making it user configurable). TIA -- To unsubscribe or change your settings for TWSocket mailing list please goto http://www.elists.org/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be