Re: [web-209] email, SPAM & AWS

From: user 8.
Sent on: Thursday, August 20, 2009 11:46 AM
Re: [web-209] email, SPAM & AWS
Hi Thomas,

Good question.  Even with an elastic IP, you fail one of the first anti-spam tests carried out by most relays, which is a reverse DNS lookup.  Regardless of whether you hold the IP forever, a lookup against the IP is always going to map back to an amazon host, rather than your own (since amazon controls the netblock).  That discrepancy alone is usually enough to cause the major services to drop it  :/

-justin  


On 8/20/09 12:37 PM, "Thomas Shealy" <[address removed]> wrote:

I'm curious about this too.  Couldn't you hang on to an elastic-ip
address and remove it from any blacklists?  Also, what's involved in
registering a domain specifically for sending smtp traffic and why
couldn't this be done for a domain mapped to an elastic-ip?

Thanks.

Tom


Nate Aune wrote:
> Hi Tsahy,
>
> Yeah, since the EC2 instance is not a registered domain for sending
> email, it's very likely that the email sent from this machine will be
> spam filtered. Therefore, you may want to use a 3rd party service such
> as AuthSMTP <http://authsmtp.com/> to send the email.
>
> Here are a couple links that you may find helpful:
> http://developer.mindtouch.com/Wik.is/EC2_Infrastructure#Postfix_configuration
> http://ubuntu-tutorials.com/2008/11/11/relaying-postfix-smtp-via-smtpgmailcom/
>
> Hope this helps!
> Nate
>
>
>
> On Thu, Aug 20, 2009 at 11:15 AM, Tsahy Shapsa <[address removed]
> <mailto:[address removed]>> wrote:
>
>     Hi All,
>     Quick question, we're about to roll out our new Drupal website on
>     AWS and was wondering how do people deal with emailing out of that
>     instance without being flagged as 'spam' (I heard / read that AWS
>     IP addresses are 'marked').
>
>     More details: as part of the user registration on our website,
>     we're sending an email out to the registrant with their account
>     information etc..
>
>     Any pointers will be appreciated.
>
>     Regards,
>
>     Tsahy.
>
>
>
>
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