Ooops You help a lot. Very, very thanks for the lesson ! I understood what to do, and also understood that still remains some type of problem in the solution that I intend to implement.
MN. On 9/21/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > > >------- Original Message ------- > > > > 2) How I will be able to connect in the SMTP server > if I only have the email > > account and I do not have the password? What do you > mean with "connect" ? > > Under "normal" circumstances, you would connect to > your local SMTP Server (or your ISP's) to send > e-mail. In your particular case, you want to connect > directly to the recipient's SMTP server. The first > thing to do is to find out the server's address, and > you do this by performing a DNS Query and checking > the MX (Mail Exchanger) record: You take the e-mail > address, split it on the '@' symbol, and take the > part on the right side -- that should be the > network's domain. You perform the MX record query > against this domain, and it should return the host > address of the SMTP server that serves that domain. > Note that this is not the same as trying to connect > directly to the domain name, as most of the time this > may not work. (I'm sorry I can't help with that > part, because I've never used TDNSQuery.) > > For example, suppose you have this list's address: > <email@example.com>. You take the domain part, > <elists.org>, and perform a DNS query for the MX > record, and the query returns the actual address of > the mail server that serves elists.org: > <mail.elists.org>. Once you have the SMTP server's > host address, you set that as the host property of > the TSMTPCli component, and then perform the SMTP > transaction as usual. > > One thing to understand is that connecting to a > remote SMTP server depends on that server accepting > you as a valid external server. This is important. > It means that if the SMTP server requires some sort > of authentication, and you are not a local user (and > therefore do not have valid credentials), you won't > be able to connect. > > That said, remote servers *should* allow external > connections when the recipient is local (how else > would the users ever receive mail from the outside > world?). I say "should", because there may be some > restrictions. For instance, the server may require > you to have a valid SPF record, or may perform some > look-up in anti-spam databases to make sure you are > not a known open-relay host, etc. Also, most, if not > all, major ISP networks block direct SMTP connections > from dynamic IP addresses (this includes Dial-Up as > well as Broadband connections). > > I hope this helps. > > -dZ. > > -- > 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 > -- 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