We've in our company a Cisco Asa 5510 v8.4(3), Asdm 6.4(7) and a SSM-CSC-10-K9. The firewall is in transparent mode. I get an exchange 2003 SP2 server behind. When users trying to send mailing lists with many recipients (above 300), the Exchange server didn't send these mails. I'm pretty sure that this problem come from the ASA Firewall, because when I plug my server directly on my Internet Connection, the mailing list is sent. I've search on the web, and disable "ESMTP Inspection", but it didn't work.
ASA Version 8.4(3)
!
firewall transparent
hostname ciscoasa
domain-name *****.com
enable password ****** encrypted
passwd ***** encrypted
names
!
interface Ethernet0/0
nameif INTERNET
bridge-group 1
security-level 0
!
interface Ethernet0/1
nameif LAN
bridge-group 1
security-level 100
!
interface Ethernet0/2
nameif EKNPC06
bridge-group 1
security-level 100
!
interface Ethernet0/3
shutdown
no nameif
no security-level
!
interface Management0/0
shutdown
no nameif
no security-level
management-only
!
interface BVI1
ip address 192.168.16.2 255.255.255.0
!
ftp mode passive
clock timezone CEST 1
clock summer-time CEDT recurring last Sun Mar 2:00 last Sun Oct 3:00
dns server-group DefaultDNS
domain-name eikonlogistics.com
object-group protocol TCPUDP
protocol-object udp
protocol-object tcp
access-list global_access extended permit tcp any any eq smtp
access-list global_access extended permit tcp any any eq www
access-list global_access extended permit ip any any
access-list global_access extended permit tcp any any eq pop3 inactive
access-list global_access extended permit tcp any any eq https
access-list global_access extended permit udp any any eq domain
access-list global_access extended permit object-group TCPUDP any any eq domain
access-list global_access extended permit tcp any any
access-list global_access extended permit icmp any any
access-list global_mpc remark Scan Pop3 en sortie
access-list global_mpc extended permit tcp any any eq pop3
access-list global_mpc_1 extended permit tcp any any eq smtp
pager lines 40
logging enable
logging asdm informational
logging facility 16
mtu INTERNET 1500
mtu LAN 1500
mtu EKNPC06 1500
icmp unreachable rate-limit 1 burst-size 1
no asdm history enable
arp timeout 14400
access-group global_access global
timeout xlate 3:00:00
timeout pat-xlate 0:00:30
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
timeout floating-conn 0:00:00
dynamic-access-policy-record DfltAccessPolicy
user-identity default-domain LOCAL
aaa authentication ssh console LOCAL
http server enable
http 192.168.16.0 255.255.255.0 LAN
http 192.168.16.0 255.255.255.0 INTERNET
http authentication-certificate INTERNET
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart warmstart
telnet timeout 5
ssh 192.168.16.0 255.255.255.0 INTERNET
ssh 192.168.16.0 255.255.255.0 LAN
ssh timeout 5
ssh version 2
console timeout 0
threat-detection basic-threat
threat-detection statistics
threat-detection statistics tcp-intercept rate-interval 30 burst-rate 400 average-rate 200
username sshuser password ************ encrypted privilege 15
!
class-map global-class
match access-list global_mpc
class-map inspection_default
match default-inspection-traffic
class-map csc-acl
class-map global-class1
match access-list global_mpc_1
!
!
policy-map type inspect dns preset_dns_map
parameters
message-length maximum client auto
message-length maximum 512
policy-map global_policy
class global-class
csc fail-open
class global-class1
csc fail-open
class inspection_default
inspect dns preset_dns_map
inspect ftp
inspect h323 h225
inspect h323 ras
inspect ip-options
inspect netbios
inspect rsh
inspect rtsp
inspect sip
inspect skinny
inspect sqlnet
inspect sunrpc
inspect tftp
inspect xdmcp
class class-default
user-statistics accounting
!
service-policy global_policy global
prompt hostname context
no call-home reporting anonymous
hpm topN enable
Cryptochecksum:***********
: end
Any advice would be appreciated.
