ASA5505 port forwarding question

Hello and thank you for your help if you are looking at this.  I have an ASA 5505 that i have deployed in the field.  Everything appears to be working on this device with the exception of getting to the mail server.  We can ping the mail server by its internal ip address (10.0.1.254) while on the internal network.  However when we try to ping by name, we get no responses.  The real ip address a 65.17.x.x ip lives on the ASA 5505.  Is there a setting in the ASA that will allow us to comunicate to the mail server by name?   Here is the config to the ASA:

ASA5505# sh run
: Saved
:
ASA Version 7.2(2)
!
hostname ASA5505
domain-name domain.com
enable password ------------ encrypted
names
!
interface Vlan1
 nameif inside
 security-level 100
 ip address 10.0.1.1 255.255.255.0
!
interface Vlan2
 nameif outside
 security-level 0
 ip address pppoe setroute
!
interface Ethernet0/0
 switchport access vlan 2
!
interface Ethernet0/1
!
interface Ethernet0/2
!
interface Ethernet0/3
!
interface Ethernet0/4
!
interface Ethernet0/5
!
interface Ethernet0/6
!
interface Ethernet0/7
!
passwd --------------- encrypted
ftp mode passive
clock timezone EDT -5
clock summer-time EDT recurring
dns domain-lookup outside
dns server-group DefaultDNS
 name-server 65.17.xxx.xxx
 name-server 65.17.xxx.xxx
 domain-name domain.com
access-list NoNat extended permit ip 10.0.1.0 255.255.255.0 10.0.2.0 255.255.255.0
access-list NoNat extended permit ip 10.0.1.0 255.255.255.0 10.240.0.0 255.255.255.0
access-list Tunnel1 extended permit ip 10.0.1.0 255.255.255.0 10.0.2.0 255.255.255.0
access-list OutsideIn extended permit tcp any interface outside eq ftp
access-list OutsideIn extended permit tcp any interface outside eq smtp
access-list OutsideIn extended permit tcp any interface outside eq www
access-list OutsideIn extended permit tcp any interface outside eq pop3
access-list OutsideIn extended permit tcp any interface outside eq https
access-list Tunnel2 extended permit ip 10.0.1.0 255.255.255.0 10.240.0.0 255.255.255.0
pager lines 24
logging asdm informational
mtu inside 1500
mtu outside 1500
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-522.bin
no asdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list NoNat
nat (inside) 1 0.0.0.0 0.0.0.0
static (inside,outside) tcp interface smtp 10.0.1.254 smtp netmask 255.255.255.255
static (inside,outside) tcp interface www 10.0.1.254 www netmask 255.255.255.255
static (inside,outside) tcp interface pop3 10.0.1.254 pop3 netmask 255.255.255.255
static (inside,outside) tcp interface ftp 10.0.1.254 ftp netmask 255.255.255.255
static (inside,outside) tcp interface https 10.0.1.254 https netmask 255.255.255.255
access-group OutsideIn in interface outside
timeout xlate 3:00:00
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 uauth 0:05:00 absolute
http server enable
snmp-server host outside 65.17.xxx.xxx community --------
snmp-server contact --------@domain.com
snmp-server community ---------
snmp-server enable traps snmp authentication linkup linkdown coldstart
snmp-server enable traps syslog
crypto ipsec transform-set strong esp-3des esp-sha-hmac
crypto ipsec transform-set stlouis esp-3des esp-md5-hmac
crypto map CGMap 20 match address Tunnel1
crypto map CGMap 20 set peer xxx.xxx.xxx.xxx
crypto map CGMap 20 set transform-set tunnel1
crypto map CGMap 25 match address Tunnel2
crypto map CGMap 25 set peer xxx.xxx.xxx.xxx
crypto map CGMap 25 set transform-set tunnel2
crypto map CGMap interface outside
crypto isakmp enable outside
crypto isakmp policy 10
 authentication pre-share
 encryption 3des
 hash sha
 group 2
 lifetime 86400
crypto isakmp policy 15
 authentication pre-share
 encryption 3des
 hash md5
 group 2
 lifetime 86400
tunnel-group xxx.xxx.xxx.xxx type ipsec-l2l
tunnel-group xxx.xxx.xxx.xxx ipsec-attributes
 pre-shared-key -----------
tunnel-group xxx.xxx.xxx.xxx type ipsec-l2l
tunnel-group xxx.xxx.xxx.xxx ipsec-attributes
 pre-shared-key -----------
telnet timeout 5
ssh 10.0.1.0 255.255.255.0 inside
ssh 65.17.xxx.xxx 255.255.255.0 outside
ssh timeout 10
console timeout 0
vpdn group pppoegroup request dialout pppoe
vpdn group pppoegroup localname -----------@domain.com
vpdn group pppoegroup ppp authentication chap
vpdn username ---------@domain.com password -----------

!
class-map inspection_default
 match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
 parameters
  message-length maximum 512
policy-map global_policy
 class inspection_default
  inspect h323 h225
  inspect h323 ras
  inspect rsh
  inspect rtsp
  inspect sqlnet
  inspect skinny
  inspect sunrpc
  inspect xdmcp
  inspect sip
  inspect netbios
  inspect tftp
!
service-policy global_policy global
ntp server 65.17.xxx.xxx
prompt hostname context
Cryptochecksum:91f2c7564e53e23344a216a72cf53e50
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