Hello, Thank you all, for replies. After researching deeply on this, the following steps were performed to resolve this issue:
- Enable same RBL checks on secondary mail server - Tell SpamAssassin on primary mail server - that secondary MX server is not ALL_TRUSTED. SA was giving negative points to all messages from secondary MX. http://wiki.apache.org/spamassassin/FixingAllTrusted -- -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
