Hi,
Recently i have encountered increasing spams flowing into my exchange 2010 organization
we had some before but recently it has increased a lot
there are two edge servers which i tell you some detail configurations done on them but before that i should say that we have spams from addresses like @yahoo.com (which is very far from mind if our exchange edge cannot check that it is from a valid domain like yahoo) and also emails that their senders' IP address is in the list of spamhaus and .. (which are all enabled on edge servers)
how can i scrutinize this problem and solve it ?
on our two edge servers :
Content filtering is enabled
there are a few IP's in Allowed list
no ip allow list provider
all blocklist providers (all six ones in exchange default config) are enabled
Sender ID is allowed with reject message option
Sender reputation is enabled with the option open proxy .... and level is 8
any help is appreciated ! thanks so much