Friends, i have ASA 5520. I opened pop3 and smtp port for mail. But, from outside network (internet) when i type my ASA's public IP address in the pop3 and smtp mail works fine. But inside in my network in this case mail is not working. ISP staff told me that inside host should ping ASA's outside IP but i can not PING...
My task is next: Inside host should access mail using ASA Public IP address in POP3 and SMTP field
first about ping
in ASA u cant ping ASA interface from another interface even if u enable icmp inspection u will be able to pass icmp but not ping interface from another interface!!
so if u have access to ur network dont worry about this ping issue
secondly r u using static nat for ur mail server?
and if the users in the network reside in the same interface to the mail server why udont us its private IP for those users
for example if the server ip is 10.10.10.1
put this ip for inside users
also some time esmtp insspection make problems try to disable it
if helpful rate please