[ale] mail headers question

[Geoffrey]

Joe Steele wrote:
> On Friday, August 27, 2004, Geoffrey wrote:
> 
>>Geoffrey wrote:
>>
>>>My expectation, which I'm about to test is, speedfactory will not permit
>>>me to send email through their server with an email address that
>>>reflects a domain that does not match the smtp server.  I'll let you
>>>know what happens. :)
>>
>>Well, it worked, so my assumption was not correct.  Don't know that I
>>understand it, other than the fact speedfactory knows the email is being
>>sent from my static, therefore will permit it.
> 
> 
> I think ISP's generally don't care what their customers use as a 
> sender address (within reason).  Many people want to be able to use 
> different sender addresses depending on the circumstances (whether 
> they are responding to a business contact vs. a personal contact, for 
> example).
> 
> There was just one more thing about this bounced message issue that I 
> might point out.  You previously provided Earthlink's error message:
> 
> 
>>foobar at mindspring.com:
>>   550 Dynamic IPs/open relays blocked. Contact
>><openrelay at abuse.earthlink.net>.
>>   command : mail
>>   response: 550 Dynamic IPs/open relays blocked. Contact
>><openrelay at abuse.earthlink.net>.
> 
> 
> My interpretation of this is that Earthlink rejected the message in 
> response to the SMTP "mail from:" command.  This means that Earthlink 
> rejected the message without even waiting to see who the recipient 
> was or what the message content was.  In other words, Earthlink never 
> saw the mail header containing your private IP address.  
> 
> For Earthlink to say that the message is rejected because "Dynamic 
> IPs/open relays blocked" can only mean that they didn't want to do 
> business with the 1and1 SMTP server.  It had nothing to do with the 
> unseen message content.

That's interesting, I think I'll try sending email from my speedfactory 
based domain through 1and1 and see if I get the same results.

-- 
Until later, Geoffrey       Registered Linux User #108567
                             AT&T Certified UNIX System Programmer - 1995