Hi Sreec,
thank you for reply.
Servers I am refering are exchange servers but same is with other servers connected to logical switch behind ESG.
We have
ESG uplink connected to standard VLAN where are some other production servers (and DCs) and
ESG internal connected to logical switch.
We migrated Exchange from logical switch to standard VLAN and problem is gone for Exchange. Now we have few servers behind ESG which we use for testing.
Anyhow, problem is not visible for same servers when they are connected to standard VLAN (where ESG uplink is too).
Best regards
Goran