Yes, add the port though and do not set relay to true, e.g.

g_gateway domain="*" to="relay.jangosmtp.net:2025" relay="false" user="my jangosmtp user" pass="my jangosmtp password"


(if you set relay true then your server becomes an open relay  and will 
get spammed and blacklisted.)

     ChrisP.


On 22/02/2016 10:22 p.m., surgemailHIDDEN@etwinsite.com wrote:
> Hi,
>
>   I'm currently able to receive but cannot send mail.
> My ISP blocks port 25.
> Therefor, I'm using jangosmtp to send mail via 2525 port.
>
>
> I've found the below to set another smtp server for sending mail:-
> g_gateway domain="*" to="ip of server to use" relay="false" user="user to auth with" pass="password of user"
>
> can my config be like this?
>
> g_gateway domain="*" to="relay.jangosmtp.net" relay="true" user="my jangosmtp user" pass="my jangosmtp password"
>
> thanks & regards,
> Shenk