We are forwarding the mails to some mailboxes to google mail from our exchange server. This way those people have access to their mail out of the office.
We are at the moment using MXLAB anti spam protection. What this does is we receive all our mail from them and send all of our mail to them. They filter the mail for the spam. My boss decided it was too expensive and asked that we change to avast endpoint protection suite.
I have been testing without the endpoint protection suite because I don't find any trial. We got added to blacklist everywhere in 2 hours because we were forwarding the spam to gmail.
So my problem is this : how to prevent this from happening? Also, will avast endpoint protection suite protect our mail before being received by exchange? because if it is not the case I need another way to forward or to filter the spam, because as soon as the mail is on the exchange server it is forwarded to gmail. It would be no use to filter it afterwards, at least for this problem.
It is also acceptable to have another solution to access our mails out of the office, but they need to access it on their phones.