Sending bulk emails

Stephen MacLean smaclean at madmansoft.com
Mon Aug 25 07:43:08 EDT 2014


If the server doesn’t have a valid Reverse DNS lookup for it, then a lot of email systems will reject it.

For most, but not all, it doesn’t matter that the server name = the domain name you are sending from, as long as the RDNS is valid. RDNS is usually assigned by your ISP, since they typically own the IP block.

RDNS looks like 74.125.226.7 -> lga15s42-in-f7.1e100.net (that’s for one of google’s front ends for google.com)

A good way to check your servers IP reputation is to use http://postmaster.aol.com and enter your server’s IP. If it’s got a bad or neutral rep there, it most likely has it elsewhere. It also has some tests you can run on/from your server to help troubleshoot issues.

hth,

Steve MacLean


On Aug 25, 2014, at 7:17 AM, jbv at souslelogo.com wrote:

> Thanks for the reply.
> I have already checked the IP and the domain names, and none seems to
> be blacklisted. IMHO the problem is on the ISP side : somehow they check
> the header of the emails for some inconsistencies between the server ip
> and the sender's domain... Or if too many email addresses of the same
> ISP get the same email from the same sender, they mark the email as spam...
> But I'm not a specialist...
> 
> jbv
> 
>> I would suggest something like Constant Contact.  The problem you are
>> currently experiencing will continue to grow as your IP address (and
>> possible address block) gets placed on blacklisted servers.  One way to
>> check on this is to go to http://whatismyipaddress.com/blacklist-check
>> 
>> SKIP
>> 
> 
> 
> 
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