[SOLVED] Incomming Mail with DynDNS doesn't work

[Dakapo]

Hello!

I got Scalix working on a Debian Etch Server. Everything looks fine and outgoing mails do work.

The last thing I have to get working is incomming mail.

I have the following struncture:

Server1:
Hosted VirtualServer with bind9 as DNS-Server
mydomain.com
fixed IP

Server2:
My Scalix-Server in my private LAN
Behind a nice Linksys-Router with Tomato-Firmware
Configured for E-Mail-Domain "mydomain.com"

Router:
Configured for dyndns
Available from the internet over "fantasyname.dyndns.org"
Port-Forwarding to my Scalix-Server of the following Ports: 25,587,110,143


So my Scalix is available from internal and external.
My problem is: As soon as I change my bind9 for sending Mails to my DynDNS-Domain I don't get any mails on my Scalix. Of course I don't receive them on my old mailserver anymore.

My bind-Configuration looks like the following:

Code: Select all

$TTL 1W
@ IN SOA dns1 root (
123456789 ; serial
1H ; refresh
2H ; retry
1W ; expiry
11h) ; minimum
        IN      NS      dns1
        IN      NS      ns5.nameserverservice.de.
        IN      MX      80 fantasyname.dyndns.org.

scalix  IN      CNAME   fantasyname.dyndns.org.
*       IN      A       62.62.62.62


My test-mail I send to myname@mydomain.com

I hope anybody can help me!

Thank you very much
Dakapo

[KevinAnderson]

Does your ISP allow inbound port 25 connections? (Can you telnet to the server on port 25 from another location, preferably using a diferent ISP's connection?)

Kev.

[Dakapo]

Hello Kev!

It was my same idea this morning to try telnet from an external IP-Address.
I can't connect. I didn't know that ISPs sometimes block this port.

Is there a possibility for me to get that working?

Kind regards
Dakapo

[Dakapo]

Very interesting!

My last try of external availability of the Scalix-Server is 2 weeks ago.
Now I saw that all ports of the Server are unavailable from extern.

So I'll try to find the problem and will post here again.

Dakapo

[Dakapo]

Ok, there was a problem with the network-interface on my Scalix.

/etc/init.d/networking restart
and
/etc/init.d/sendmail restart

solved the problem