Hi,
Ale via Exim-users <exim-users@???> (Fr 08 Jan 2021 14:11:14 CET):
> I'm a newbie and currently my goal is just to set a server with the default
> Debian config file and the bare minimum modifications to It necessary to
> make It work. I tested my email server and domain with various web tools,
> everything seems fine, and my ip and domain aren't blacklisted anywhere.
>
> My problem now is that I noticed that a specific server, smtp.tiscali.it, is
> not reachable from my server on his port 25. It's reachable on port 465,
I've daubt if this is related to you. For me it is unreachable too.
Except for Port 465.
> I've verified that with telnet. I tried to send a few emails yesterday, and
> after a while they blocked me. The first emails I sent on that server
> weren't signed with dkim, and maybe this is the reason why they blocked my
> ip on port 25. Now I see on my logs that the last email is still frozen, and
> from time to time my server tries to send it, but I always receive the error
> 421.
Do you have a proof of successful delivery to their port 25?
> Could you give me some advice, some documentation that I could use to fix or
> better understand this please?
I believe, the mentioned server is simply not built to accept mails on
port 25, but should probably act as a "submission host" for tiscali customers
only.
> Do you think It's still worth reading the book "The Exim smtp Mail server"
> by Philip Hazel?
Definitly.
Best regards from Dresden/Germany
Viele Grüße aus Dresden
Heiko Schlittermann
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