I am very new to exchange 2013. We have a server locally that supports 25 users. We are getting pounded with spam. I implemented a free XEAMS spam filter and it is doing well, but the spam is still flowing. I was under the impression that if the spam is
being shut down and not relayed, that it would stop after a few days. It's been about 10 days now and yesterday we had 6600+ spam emails filtered out. I was worried that I may have an open receive connector that was being exploited, so I called Dell because
I have hardware and software support through them. I had two techs from dell connect remotely and look over the connectors. I was told that having anonymous checked on the receive connectors would leave us vulnerable to the spam. Now, I have seen more than
one legitimate article that totally debunks this as adding anonymous does NOT allow anyone to relay, it does allow submit though. So, is this a problem or not? I have one connector just for copiers to scan to email and the only way I could get it to work was
by listing the exact ip addresses of each copier and checking anonymous. I was told that would be a vulnerability. Is that true? Finally, what are the default security settings for the default connectors in exchange 2013? I just want to make sure they are
correct now. I am just using one machine for exchange, so I have default, default front end, client proxy, client front end, and outbound proxy front end. Any advice is very much appreciated.
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