currently we have the following problem.
We have two Backendservers and two cas-servers working as "Proxy through client access server".
Now we have one FQDN configured on Send Connector "smtp.domain.de"
"smtp.domain.de" has an A Record to IP-Address 220.127.116.11
But CAS-Servers have IP-Addresses 18.104.22.168 and 22.214.171.124
Now if an email is send it is shown in email header like this
"Received from smtp.domain.de with IP-address 126.96.36.199"
"Received from smtp.domain.de with IP-address 188.8.131.52"
But spamfilters maybe filter this as spam, because smtp.domain.de points to ip-address 184.108.40.206
How to resolve this?
I can not configure any ip-addresses on send connector.