PO, SA and Secondary Mail Servers...

[Dan Tappin <dan.tappin@xxxxxxxxxxxxxxx>]

Strange issue not sure what is going on.

Primary MX via PO on a DSL connection.  I had a secondary MX on  
another OS X system running OS X Server w/ Postfix & SA.  All was  
well PO would bounce spam and the secondary server would also bounce  
the mail and not simply forward all mail as a PO based secondary mail  
server would do.  The resulted in very little spam.

Last weekend I switched my PO system to a cable based ISP.  New IP's  
etc.  I made my DNS changes, relay control on the secondary server  
etc, bit of a black out over the weekend but all is good now.

One nagging issue... my spam level has now exploded.  It all seems to  
be passing directly through the PO system and not an relay issue from  
the secondary.  Before the switch I would get maybe one of two spams  
a day - if that.  Now I'm getting 50+ each day - back to the level of  
my pre-SA days.

Any thoughts?  I'm stumped.  SA does not have any IP specific  
configuration that I know of.

Dan T

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