Spam still finding its way through

HCL Domino Domino Forum
1

Even though I have enabled the “Verify that local domain recipients exist in the Domino Directory” function on (2) replicating Notes servers, many bogus messages addressed to non-existent internal addresses are finding their way to legitimate addresses.

Example little@ABC.com is making its way to Jsmith@abc.com.

Other info:

One server is an R5, the other an R6. The R6 server is configured to receive all ABC.com domain messages, while the R5 server receives XYZ.com and 123.com mail.

The R6 (ABC.com) server seems to hold invalid messages within the server’s mailboxes, but somehow the fake messages that get through are via the R5 server (subsequently routed to the R6 server).

These messages are also making it past a Linux SpamAssasin appliance (ABC.com domain only at this point).

Is there something else which must be locked down here?

Thanks,

Charlie

2

Subject: Isn’t it possible to route all domains over the ND6 server?

You can specify multiple SMTP domains in the global domain document. Can’t you switch all SMTP internet mail to the ND6 server? As long as you have an R5 SMTP server facing the internet, you can’t really close this hole I’m afraid.