sending mails: port 25 blocked

[Ernest Mendoza]

Dear All,

I am programming an application that sends emails
using the port 25 of an SMTP sever. The server I used
for tests allow to use this port. However, when I try
to use this port for sending emails the most part of SMTP servers
are blocking this port to avoid SPAM. Anybody knows any solution
to this problems?

Cheers,

Ernest

[Jim_Kring]

You should really only be sending emails from SMTP servers that you have an account on. They will check the from address to make sure that it is a valid email account on the system, before accepting the email. If you do have an account on the server, the administrator (or ISP) will tell you which port it is on, but I think that it will almost always be 25.

Another issue that you might be encountering is a firewall that is blocking port 25. If so, it is probably not be your SMTP server that is blocking you, but the IT folks in your company that control access to and from the Internet. You should ask them about this. It is possible, depending on your IT depts policies, to have the port opened for specific domains or IP Addresses behind the firewall.

Go
od luck,

Jim

[Ernest Mendoza]

Dear Jim,

If I understand rigth, the server will allow me to send emails if
I have an email address and the ip is known? Is that ok?

Cheersm

Ernest


Jim Kring wrote:
> You should really only be sending emails from SMTP servers that you
> have an account on. They will check the from address to make sure
> that it is a valid email account on the system, before accepting the
> email. If you do have an account on the server, the administrator (or
> ISP) will tell you which port it is on, but I think that it will
> almost always be 25.
>
> Another issue that you might be encountering is a firewall that is
> blocking port 25. If so, it is probably not be your SMTP server that
> is blocking you, but the IT folks in your company that control access
>
to and from the Internet. You should ask them about this. It is
> possible, depending on your IT depts policies, to have the port opened
> for specific domains or IP Addresses behind the firewall.
>
> Good luck,
>
> Jim