* Stan Hoeppner <s...@hardwarefreak.com>:
> On 8/4/2011 9:57 AM, Alejandro Facultad wrote:
> > What is the difference if the recipients opt in receive the mails or not, 
> > from the point of view of spam black lists ???
> 
> No difference, if you're referring to DNSBLs.  Almost all are trap
> driven.  

Uhm, if somebody (double) opt-in, then it's really unlikely to be a
trap.

> So if you're sending to real customer addresses, you won't get listed
> on DNSBLs.

Yeah.

> If many of those 15K addresses are at gorilla receivers such as gmail,
> hotmail, yahoo, aol, you will run into delivery rate problems,

Oh yes.

> "this is spam button" problems, etc.  In which case you should read the
> list archives.  This type of bulk sending, almost an identical
> scenario, was covered recently, within the last month or two.
> 
> -- 
> Stan

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Ralf Hildebrandt
  Geschäftsbereich IT | Abteilung Netzwerk
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