hello and thanks for answering!

my problem now is, that i got two answers and do not know,

how to aswer seperatly to each one. thus, first i anser to lead and

second to logsat. next i do not know why between 2 text-lines there is a space-line. thanks!

to lead: 

configuration:

router incoming:

ip-address: 212.186.222.65 port 25

will be forwarded to spamfilter

ip-address: 212.186.222.69 port 25

will be forwarded to mail.foso.at

ip-address: 212.186.222.69 port 26

entry in whitelist / local domains = foso.at(without ip-address)

to logsat:

one of my domains is foso.at

because of trying the configuration-settings, i informed all

replyers to use instead of support@foso.at my other address

foso@gmx.at  

If we telnet to port 25 on that IP we get:

220 {mx001} GMX Mailservices ESMTP

this answer is correct!

try to do a telnet on 212.186.222.69:25.

it should look like SpamFilter's welcome banner.

try to do a telnet on 212.186.222.69:26.

it should look like mail.foso.at.

----------------------------------------

H:\>nslookup
> server 212.186.222.68
Standardserver:  ns1.fotosoft.at
Address:  212.186.222.68

> mail.foso.at
Server:  ns1.fotosoft.at
Address:  212.186.222.68

DNS request timed out.
    timeout was 2 seconds.
Name:    mail.foso.at
Address:  212.186.222.69

or just have a look at www.nic.at, domain foso.at

if you get an error something like "no connect possible",

that's because the router is rejecting them.   

thanks to both guys for answering!

greeting

foso/vienna ..