ASA 5520 Mapping the mail server problems

zhou359004756 — Tue, 12 Mar 2019 00:51:02 GMT

Installed ASA5520 the inside end one exchange server to assign it a fixed addresswithin the network, and static (inside, outside) of these servers is mapped to a public network IP (x.x.254.165), the domestic mail send and receive basicnormal, but abroadincoming mail will be blocked.

Because after my mail server sent out the message, send the IP address of the senderSMTP server Outgoing SMTP mail host IP Firewall outside interface IP (x.x.254.166). IP andinnuendo that IP is not the same as an IP.

Not be able to receive e-mail in a foreign country, I would like to ask how to solve?

And I cannot statically NAT to outside interface. This would stop all otyher services as well.

The following is my configuration：

interface GigabitEthernet0/0.265

description ## CT_Internet_10M ##

vlan 265

nameif outside1

security-level 0

ip address X.X.254.166 255.255.255.248 standby 59.61.86.164

object network Xiamen_mail_https

host X.X.200.200

object network Xiamen_mail_pop3

host X.X.200.200

object network Xiamen_mail_smtp

host X.X.200.200

object network Xiamen_mail_https

nat (inside,outside1) static x.x.254.165 service tcp https https

object network Xiamen_mail_pop3

nat (inside,outside1) static x.x.254.165 service tcp pop3 pop3

object network Xiamen_mail_smtp

nat (inside,outside1) static x.x.254.165 service tcp smtp smtp

Thankyou！！！

ASA 5520 Mapping the mail server problems

Karsten Iwen — Wed, 23 Jan 2013 09:37:08 GMT

Have you configured a PTR-record for the IP x.x.254.165 with the FQDN of your mailserver? That's a typical problem.

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ASA 5520 Mapping the mail server problems

zhou359004756 — Mon, 28 Jan 2013 02:16:16 GMT

Thankyou ！！！

topic ASA 5520 Mapping the mail server problems in Network Security

ASA 5520 Mapping the mail server problems

ASA 5520 Mapping the mail server problems

ASA 5520 Mapping the mail server problems