hairpining nat

[coskun_ist]

hello 

i have fortigate 100e  and 6.0.5 running on device

i have 2 wan ip dsl and metro 

mail server is nat dsl , client networks are nat metro net . we wan to access external server of mail server 

i find hair pining nat on fortigete but i didnt success

https://kb.fortinet.com/kb/documentLink.do?externalID=FD36202 can you help me 

[coskun_ist]

mail server and client network same 10.0.0.x /24 

[lobstercreed]

You would have to share some config so I can see what you're missing because the article really gives you all the right info on how to do this (I use it for my network as well).

[Dave_Hall]

Considering the mail server is external and likely has proper DNS records setup, you may be better off either setting up a local DNS record on the client network that resolves the host name to a local address.  Alternately, you could try DNS translation.