Re: SMTP gateway

"Jeff Cochran" <jeff.nospam@xxxxxxxx> wrote in message
news:4310449b.891847031@xxxxxxxxxxxxxxxxxxxxxxx
> On Sat, 20 Aug 2005 11:50:11 -0600, "Frank" <frank673@xxxxxxxxxxx>
> wrote:
>
>>in order to be able to send an email, do I have to specify and SMTP
>>gateway?
>>how would a server know that an email should be relayed to a specified
>>server? Thanks.
>
> A SMTP "gateway" is just a SMTP server that accepts mail for a range
> of IP addresse4s, there's nothing special about it. And yes, to send
> mail you have to specify a SMTP server. As for how it knows where to
> send it, that's magic. :)
>
> Okay, that's what DNS does, in conjunction with your SMTP server and
> mail client. It's like the post office. How does the mailman know
> what house to deliver to? Yep, the address on the message itself.
> How does he know that he delivers to the Smith's house on Sesame
> Street if there's no address? That's right, he looks up the address
> somewhere.
>
> Same thing only faster and electronic.
>
> Jeff

Thank you for the answer. If I understand it correctly, If I send an email
to an adress in lets say hotmail.com then it would lookup the server in the
DNS and send it directly. right? If not, and if I have to specify an SMTP
gateway then I should contact my internet provider to tell me what their
SMTP server is. Otherwise I would get the error message "550 Relaying
denied" that I am getting right now. Thanks.

Frank


.

Relevant Pages

  • Re: Email Programming using System.Web.Mail
    ... With System.Web.Mail,, the book for the SmtpMail class says that if you do not specify a value for SmtpServer then it uses the local SMTP server. ...
    (microsoft.public.dotnet.languages.vb)
  • Re: Email Programming using System.Web.Mail
    ... configuration first but if that doesn't specify the appropriate ... configuration files, an exception would be thrown when you call the ... The moment I specify a valid server then it works: ... It will only connect to an 'up-line' SMTP ...
    (microsoft.public.dotnet.languages.vb)
  • Re: Mail delivery wierdness
    ... That's usually the behaviour indicating that there is a server at ... MS Exchange is pretty far beyond the ... FreeBSD gateway?). ... SMTP is a connection-oriented service. ...
    (freebsd-questions)
  • Re: Can not receive inbound internet e-mail
    ... what are you using for your gateway smtp box? ... on exchange 2003 you can find the path of smtp protocol logs by going to ... Our current set up is as follows: Gateway server receives ... > I will try checking the logs the next time I try to switch. ...
    (microsoft.public.exchange.setup)
  • Re: Send On Behalf Of
    ... > user did not have permission to send to this recipient. ... > specify a user in the From field. ... > Simple Mail Transfer Protocol (SMTP) virtual server. ...
    (microsoft.public.exchange.misc)