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robinh007
New Contributor III

Issue with webmail server

Hi,

 

My Webmail server is hosted remotely and is NATed through a public IP. While the login page is accessible, I am unable to log in. The network is configured with a dual-WAN setup using SD-WAN interfaces. I have observed that when one of the ISPs is disabled, I can successfully access the mail account. An SD-WAN rule has been created, but webmail access is only possible when a specific ISP is used or the other is disabled. Could you suggest a resolution that allows webmail access without relying on an SD-WAN rule or policy route?

 

#Fortigate

RH007
RH007
2 REPLIES 2
AEK
SuperUser
SuperUser

Hi Robin

Probably your traffic is load-balanced across WAN links.

As a test, try with a SD-WAN rule to force your traffic (your client IP as source) to be forwarded through one specific WAN link.

AEK
AEK
dingjerry_FTNT

Did you use a VIP for your webmail server access?  If yes, did you configure the VIP with one ISP link only?

Regards,

Jerry
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