[nycbug-talk] greylisting proxies?

[Jonathan Vanasco]

On Oct 1, 2006, at 2:49 PM, George Georgalis wrote:
> What MTA fails on one try?
>
> <rant> the worse mta is verizon -- hard to deliver to. </rant>

in my experience:
	verizon's ( at least occasionally )
	90% of microsoft mta installs ( actually has nothing to do with the  
software, but braindead corporate it staff with a certificate from  
some technical school they once saw an informercial for  )

the biggest issue with verizon in my experience is that they don't do  
rfc 1413 right.  you can usually save yourself a ton of hassle by  
using a dumbed down ruleset for the verizon mta ip blocks.  they also  
do address verification on incoming mail - which isn't a bad thing.   
some mta's don't handle that right , and some users will do made up  
aliases or spoof their own address through a different mta ( ie:  
user at email.com sends a message through user at altemail.com  with the  
same from ), which can bump up your blacklist rating for the server  
mail was sent through.


// Jonathan Vanasco

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