As Scott pointed out, IPFILE will work on the same number of hops that Declude is configured for, so it is possible that you could be scanning multiple hops.  IPFILE also does not support SKIPIFWEIGHT or other tweaks to end processing of a filter.  In other words, it always runs.  A custom filter with REMOTEIP can be skipped and REMOTEIP is definitely limited to the last hop's IP address.  It also supports CIDR ranges like IPFILE does.  In the end however, you should find that this particular type of check, regardless of the mechanism, is very fast and it would take a lot to overburden your system.

Matt



Goran Jovanovic wrote:

Hi,

 

Is there any performance benefit of using an IPFILE lookup vs a REMOTEIP lookup?

 

Is there any consensus of which option would be better to use to subtract some weight from a good mail?

 

I am looking into this as I have some mail coming from a server with no REVDNS and a HELOBOGUS and I need to counterweight it somehow. This IP belongs to CrystalTech Web Hosting Inc so I may have to credit back checking the MAILFROM.

 

X-RBL-Warning: HELOBOGUS: Domain DEDE58 returns a server failure for MX or A records.

X-RBL-Warning: REVDNS: This E-mail was sent from a MUA/MTA 209.200.82.59 with no reverse DNS entry.

 

Thanks

 

Goran Jovanovic

Omega Network Solutions

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