SMTP Error from my server?

[Chris Maness]

Chuck Swiger wrote:
> On Sep 17, 2007, at 4:05 PM, Chris Maness wrote:
>>> Looks to me like a failed sender verification callout-- these are 
>>> generally construed to be abusive.  I can't easily tell from your 
>>> munging whether it's your server or Adelphia that's doing it, though.
>>
>> This is the only e-mail address that I am having this problem with, 
>> and it has been going on for a year or so now.  What other info would 
>> you guys need to tell what it is.  I guess I don't understand the 
>> whole "sender verification callout"  I'll have to do a little google 
>> to find out.
>
> The idea is pretty simple: when someone sends you an email, you delay 
> accepting it until you can confirm that you can send a reply back to 
> the sending address, or more precisely, check whether you can do a 
> MAIL FROM: your domain and RCPT TO: the sender, and have it return OK, 
> without actually going into the DATA phase and delivering a test message.
>
> This idea works fine for normal email addresses, but fails miserably 
> with certain types of automated email which is not intended for people 
> to reply to, and it also tends to lose out with TDMA 
> (http://tmda.net/).  More importantly, it also fails to work with 
> itself-- other people using "sender verification callouts" cause a 
> loop of failed deliveries, as neither side trusts the other.
>
> ---Chuck
>
Can I turn it off for this sender?

Chris Maness