[Mimedefang] Greylisting and Primus

[Todd Aiken]

> -----Original Message-----
> From: mimedefang-bounces at lists.roaringpenguin.com 
> [mailto:mimedefang-bounces at lists.roaringpenguin.com] On 
> Behalf Of David F. Skoll
> Sent: Thursday, September 29, 2005 9:08 PM
> To: mimedefang at lists.roaringpenguin.com
> Subject: Re: [Mimedefang] Greylisting and Primus
> 
> Matthew.van.Eerde at hbinc.com wrote:
> > David F. Skoll wrote:
> 
> >>No, but we greylist after the DATA phase.
> 
> [Amusing dialogue snipped]

It was rather amusing.
 
> The problem with greylisting at RCPT time is that the 
> conversation goes like this:
> 
> Man: Will you marry me?
> Woman: Ask again later.
> 
> Man: Will you marry me?
> Woman: Ask again later.
> 
> Man: I'm not waiting, let's consummate!
> Woman: *Shoots man*

Equally funny.  But if Woman shoots Man, there wouldn't be a problem in
the future, unlike MTAs which would come back for more.  So in reality
it would look more like:

Man: I'm not waiting, let's consummate!
Woman: *Punches man in head and knocks him out*

...time elapses...

Man: Will you marry me?
Woman: Ask again later
etc...

Too bad it didn't work like *Shoots man*, then I wouldn't have to worry
about Primus after their first failure.

> Or, in actual SMTP terms:
> 
> C: RCPT TO:<x>
> S: 451 Try again later
> C: RCPT TO:<y>
> S: 451 Try again later
> C: DATA   # What the heck, let's try DATA even though all RCPTS failed
> S: 500 Silly client... Can't use DATA unless at least one 
> RCPT succeeded.
> C: Waah!!! *Generates bounce message*

Yah, I guess I'm going to have to modify my greylisting to run after the
DATA phase.  Stupid crappy MTAs!

Thanks for the suggestion, and for listening to my vent.


CU L8R...

Todd A. Aiken
Systems Analyst - Administrator
ITS Department
BISHOP'S UNIVERSITY
Lennoxville, Quebec, CANADA

HTML in email is like putting an air conditioner on a motorcycle.

 

> 
> --
> David.
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