Re: Mail error: reason: 550 5.0.0 You must use a valid mail server

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On Fri, 14 Nov 2003 08:08:58 -0600, Ed Wilts wrote
> On Fri, Nov 14, 2003 at 08:49:06AM -0500, Steven W. Orr wrote:
> > RedHat is rejecting all mail from servers which are on a dynamic address 
> > pool. Personally I think it stinks. If you're running sendmail just add 
> > these two lines to your /etc/mail/mailertable
> > 
> > lists.redhat.com esmtp:smtp.your.isp
> > redhat.com      esmtp:smtp.your.isp
> 
> That will get you redhat.com.  In a few days/weeks/months, you'll run
> across another mail server that will reject your e-mail.  AOL certainly
> will now.  Mine will.  Many others do.
> 
> It's a lost cause.  Give it up and use a smart host and save yourself
> the hassle.  I'm assuming you want your mail to always be delivered, 
> of course...

I do not have that problem, but ...  What do you mean by "smart host?" Are you
saying to use one's isp for outbound smtp?


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