Getting e-mail past senderbase.org

[Colin McGregor]

I've been doing some work on a Linux e-commerce server for a small
Canadian firm outside the Greater Toronto Area. The server, which is
based at a hosting firm in California periodically sends e-mail
(orders and status messages) to the owners. A few weeks ago the owners
of the website stopped getting e-mails from the site. A look at the
logs turned up messages like the following:

<Date> 13:41:44 <e-commerce company name>  postfix/smtp[9285]: connect
to <non-GTA ISP name[IP Number]>: server dropped connection without
sending the initial SMTP greeting (port 25)

Some calls and e-mails turned up the fact that the e-commerce firm was
on a senderbase.org @#$% list that their local (non-GTA) ISP was using
to screen spam. No real idea how this e-commerce site got on the
senderbase.org @#$% list. The e-commerce firm has been in operation
with the same IP number for some 10+ years. A heavy day should mean
maybe 20 e-mails. To solve the issue I did get a 2nd IP number, in a
different net block and e-mail got passed through that, but that was
also blocked. E-mails from the server to Gmail and one of Canada's
major Universities go through without any issues.

A check on both the original and 2nd IP number via
http://www.mxtoolbox.com/SuperTool.aspx comes up clean. I have
suggested to the e-commerce firm that they change local ISPs,
something they would REALLY prefer not to do.

So, the big question is any ideas on what does it take to get into
senderbase.org's good graces?

Thanks.



Colin McGregor
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