At Tue, 01 Jul 2014 20:34:15 -0700 Mark Sapiro <m...@msapiro.net> wrote:

> 
> On 07/01/2014 07:12 PM, Stephen J. Turnbull wrote:
> > Mark Sapiro writes:
> > 
> >  > At 05:00 local time this morning my Mailman installation sent password
> >  > reminders to 65 comcast.net addresses. Of these, exactly 1 bounced with
> >  > 
> >  > 550 5.1.1 <u...@comcast.net> Account not available (in reply to RCPT TO
> >  > command)
> > 
> > OK, so we know Comcast will admit that a user doesn't exist.  Is this
> > a personalized list?  Maybe Comcast does something different with a
> > multiple recipient RCPT TO that contains multiple invalid users?
> 
> 
> These and the OP's were all password reminders which are all
> 'personalized' and sent to a single RCPT TO
> 
> 
> > Also, note that this message, presumably a quote from comcast.net up
> > to the open paren, includes an extended status code whereas the OP's
> > error did not.  I wonder if his MTA was actually talking to
> > comcast.net?  Maybe somebody gave him a "comcast.com" address by
> > mistake or something like that?
> 
> 
> Good observation.

All three of the comcast bounces were @cable.comcast.com addresses.  Other 
comcast address (all @comcast.net) went through fine.  The @cable.comcast.com 
were working for sometime.  The list in question has had extreemly low volume 
recently, and was never a really high volume list.

> 

-- 
Robert Heller             -- 978-544-6933 / hel...@deepsoft.com
Deepwoods Software        -- http://www.deepsoft.com/
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