Gents...Good Evening,
We have 4 internet links...three of them are ADSL lines which we are using in Uplink balancing for Internet sharing.... The fourth link is a DIA dedicated link with registered public ip in our DNS for our mail server. SMTP proxy is enabled and receiving emails fine... for outgoing emails i am sending emails from our Exchange server using MX records (not through SMTP proxy)which are going out from Sophos UTM using the right link as i have configured the static route and SNAT... However when our DIA _(Email link)_ is down, and Exchange server try to send email outside, Sophos UTM is sending email outside using the ADSL links... I do not want that as emails are getting rejected and my server might end up in black list...What i want is Emails always goes through DIA link (with registered IP) and if that link is down, Email should wait...until it the link is up... Please let me know how to acheive this.... I also tried using SMTP proxy for sending emails outside but also same thing is happening... I also tried adding the DIA link (Email link) as a part of Uplink balancing and then tried to create sticky Multipath rule for SMTP but also it does not work...please help...
This thread was automatically locked due to age.
