Hi there-
I'm having a problem with some mail reconfiguration.
We've switched from a non-firewalled ISDN connection with one ISP to an ADSL connection with BT (British Telecom) in the UK. I've set up a 1721 for their DSL connection, and am in the process of configuring a 515E internally for them. They're using Exchange 5.5 as their mail server. A new mx has been set up for us with BT.
The problem I'm having is with both inbound and outbound mail. When I attempt to send from the Exchange box using the mx as a relay, it always fails with 'host unreachable'. I've got the ISP to check- they think there's something amiss with the way I've set up port 25 routing- I'm not so sure. Using DNS for outbound mail works perfectly. Inbound doesn't appear to be reaching us at all.
I've set the entire internal domain to a 10.1.1.0 subnet (it used to be publicly available!) They're not using the DMZ for anything at present- plans are for a web server internally at some point. I didn't set the Exchange box in the DMZ, as its also their domain controller and just about does everything else. Could someone have a squint at my 515 config please and do a sanity check? (below)
*****************************************************
show running-config
: Saved
:
PIX Version 6.3(0)136
interface ethernet0 auto
interface ethernet1 auto
interface ethernet2 auto
nameif ethernet0 outside security0
nameif ethernet1 inside security100
nameif ethernet2 intf2 security10
enable password notshown encrypted
passwd notshown encrypted
hostname macdonalds515e
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol http 80
fixup protocol ils 389
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol sip 5060
fixup protocol sip udp 5060
fixup protocol skinny 2000
fixup protocol smtp 25
fixup protocol sqlnet 1521
names
pager lines 24
logging on
logging buffered debugging
mtu outside 1500
mtu inside 1500
mtu intf2 1500
ip address outside 192.168.1.72 255.255.255.0
ip address inside 10.1.1.1 255.255.255.0
ip address intf2 x.x.x 255.255.255.255
ip audit info action alarm
ip audit attack action alarm
no failover
failover timeout 0:00:00
failover poll 15
no failover ip address outside
no failover ip address inside
no failover ip address intf2
pdm history enable
arp timeout 14400
global (outside) 1 192.168.1.50-192.168.1.69 netmask 255.255.255.0
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
route outside 0.0.0.0 0.0.0.0 192.168.1.100 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225 1:00:00
timeout h323 0:05:00 mgcp 0:05:00 sip 0:30:00 sip_media 0:02:00
timeout uauth 0:05:00 absolute
aaa-server TACACS+ protocol tacacs+
aaa-server RADIUS protocol radius
aaa-server LOCAL protocol local
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
telnet timeout 5
ssh timeout 5
console timeout 0
terminal width 80
Cryptochecksum: notshown
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Might it be something on the 1721 config? It looks OK to me, but if someone wants to see if both boxes are cooperating with each other, feel free:
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macdonalds1721#show running-config
Building configuration...
Current configuration : 1855 bytes
!
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname notshown
!
enable secret 5 notshown
!
ip subnet-zero
ip name-server 213.120.62.98
ip name-server 213.120.62.99
ip name-server 213.120.62.103
ip name-server 213.120.62.104
!
!
!
!
interface ATM0
no ip address
no atm ilmi-keepalive
pvc 0/38
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
dsl operating-mode auto
hold-queue 224 in
!
interface FastEthernet0
ip address 192.168.1.100 255.255.255.0
ip nat inside
speed auto
!
interface Dialer0
ip address x.x.x.x 255.255.255.240
ip nat outside
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap callin
ppp chap hostname notshown
ppp chap password notshown
!
ip nat inside source list 101 interface Dialer0 overload
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer0
ip route 192.168.1.0 255.255.255.0 FastEthernet0
no ip http server
!
!
access-list 101 permit ip 192.168.1.0 0.0.0.255 any
access-list 103 deny ip 192.168.1.0 0.0.0.255 any log
access-list 103 permit udp any any eq netbios-ns log
access-list 103 permit tcp any any eq 139 log
access-list 103 permit tcp any any eq ident
access-list 103 permit tcp any any eq ftp
access-list 103 permit tcp any any eq 8081
access-list 103 permit icmp any any administratively-prohibited
access-list 103 permit icmp any any echo
access-list 103 permit icmp any any echo-reply
access-list 103 permit icmp any any packet-too-big
access-list 103 permit icmp any any time-exceeded
access-list 103 permit icmp any any traceroute
access-list 103 permit icmp any any unreachable
access-list 103 deny ip any any log
dialer-list 1 protocol ip permit
!
line con 0
line aux 0
line vty 0 4
login
!
no scheduler allocate
end
****************************************************
Cheers!
Beers in it as usual...
0r8it
