port 25 through 837 router

[ndavitt]

hi all,

Sorry new to all this.Set up new cisco 837 router on my broadband all going well except my exchange server has stopped recieving mail. Mp isp forward all our mail to a static ip address on port 25.

I cannot telnet into port 25 on my server from external source but can locally .

PLEASE HELP ????????????????/

thanks

[d-mark]

Hi,

have a look at the docs at

http://www.cisco.com/pcgi-bin/Support/browse/psp_view.pl?p=Technologies:NAT&s=Implementation_and_Configuration#Samples_and_Tips

HTH

Mark

[Live2 Bicycle]

Sounds like you need an access list on your rtr to permit traffic in bound to your mail server

access-list 110 remark Allow Outside Access to Mail Svr

acc 110 permit tcp 0.0.0.0 255.255.255.255 your.mail.ser.ver 0.0.0.0 eq 25 log

access-list 110 deny tcp any any

apply this on your external interface

config t

int e0

access-group 110 in

exit

wr mem