Thank you very much Jonathan!
As you mentioned, it's an issue with my provider, they are blocking the
ports by default.
Thanks again!
--
Victor
On Mon, Jan 20, 2020 at 6:24 PM Jonathan Billings <billings@xxxxxxxxxx>
wrote:
> On Mon, Jan 20, 2020 at 06:04:47PM -0300, V. M. Tame-Reyes wrote:
> > I apologize in advance, for the following could be too simple, but I
> can't
> > figure it out.
> > I configured a vps using centos 8, all is working fine but I'm not able
> to
> > send email from this server.
> > I tried
> > $ telnet smtp.mailtrap.io 25 but it doesn't work
> > yet
> > $ telnet www.google.ca 80 does work
> > and particularly
> > $ telnet smtp.mailtrap.io 2525 does work too.
> > I temporarily disabled the firewall, and selinux, but no luck.
> > Can anyone provide any pointers?
>
> Are you configuring your VPS running CentOS 8 to run an SMTP server on
> port 25, or are you trying to make your VPS running CentOS 8 talk to
> an external SMTP server?
>
> It sounds like you are trying to make your VPS talk to an external
> SMTP server. By default, the firewall shouldn't prevent outbound
> connections. However, some VPS providers, as well as residential
> ISPs, do block outbound traffic to port 25, in an attempt to prevent
> compromised systems from sending spam. I suggest you look at the
> documentation for your VPS provider and see if you are permitted to
> send SMTP mail from the host. You may need to relay mail through an
> authenticated SMTP relay run by the VPS provider.
>
> --
> Jonathan Billings <billings@xxxxxxxxxx>
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> https://lists.centos.org/mailman/listinfo/centos
>
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