Mail server not working with Postfix Dovecot

Mariano Jara Melagrani mjaramelagrani at
Mon Dec 7 16:17:59 UTC 2015

On 07/12/15 11:42, iceblink wrote:
> On 2015-12-07 14:11, Petter Adsen wrote:
>> On Mon, 07 Dec 2015 11:29:15 +0100
>> iceblink <iceblink at> wrote:
>>> On 2015-12-07 08:42, Petter Adsen wrote:
> An easy way to find out might be to telnet from an outside PC into the
> home server.
> Something like:
> telnet home.server 25
> HELO <hostname>
> If you get an answer from your home server then the ISP is not blocking.

I'm at home right now, but I'll try that as soon as I get the chance.

> Mind you, this only works if you use unsecured smtp, but considering
> port 25 is used, this is likely the current configuration.

How can I know if I'm using unsecured smtp?

> (If I could, I would try it right now, but I'm at work and my workplace
> does not allow a lot of things, including telnetting via port 25.)

Thanks Patrick.

> Best regards,
> Patrick

Mariano Jara Melagrani

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