[Sqlgrey-users] Backup MX servers

[Ray B. <rj_...@rj...>]

Hi

I have started to notice more and more spam emails that are being sent 
by MTAs that use the next available MX after I greylist the initial 
connect.  My server then in turn greylists the connect from the backup 
MX but it doesn't stop the spam or virus being delivered in the end.  
Are we seeing an increase in the number of spam sending MTAs that don't 
give up on the first attempt?

I don't like to think that this is so because SQLGrey does work 
incredibly well with the current connections we receive.  Any thoughts 
on this issue?

Regards
Ray