FRom this morning, my poa installed on my border manager sitetosite vpn
doesn't receive mail.
From my poa server ( so BM) i couldn't ping my domain trhought the vpn tunnel.
This solutions work fine since 2 years, but this morning, nothing.

From my domain server, i could ping my poa (BM server) but from the other
side, POA to DOMAIN, i couldn't ping.

How can we authorize the BM to ping my domain server by the vpn tunnel?