MX Messaging Resources

Our previous IP was on a blacklist so i moved our mail to a dedicated server with ip 69.64.95.42 domain is ergo.net

 we are still getting several bounced emails a day. specifically from yahoo, a lot of 421 errors, etc i have filled out their form (3x) and i still get the automated response. i have pasted one of their bounces below, hopefully someone can give me some advice, as even our hosting provider is now stumped (spf record good, reverse dns, etc)

-----Original Message-----

From: Delivery Subsystem [mailto:POSTMASTER@ergo.net]

Sent: Wednesday, January 21, 2009 4:42 PM

To: kcrumrine@ergo.net

Subject: Message Delivery Delay

MailEnable: Message delivery has been delayed.

Message is waiting at home for delivery to g.mx.mail.yahoo.com.

The message will be retried for another 30 hours.

Reason: Mail Server for yahoo.com could not accept your email at this time.

MailEnable will keep trying to deliver this message and will notify you of

any progress.

Message headers follow:

Received: from ergo-kc ([64.206.50.130]) by home with MailEnable ESMTP; Wed,

21 Jan 2009 13:31:44 -0800

Received: from ergokc

  by ergo-kc (PGP Universal service);

  Wed, 21 Jan 2009 16:30:03 -0500

X-PGP-Universal: processed;

  &n

Unfortunately I do not know if Yahoo has a blacklist, I did some searching on the Yahoo website though and found some valuable information:

http://help.yahoo.com/l/us/yahoo/mail/postmaster/postmaster-01.html
http://help.yahoo.com/l/us/yahoo/mail/postmaster/postmaster-277515.html
http://docs.yahoo.com/info/guidelines/spam.html

If you are a small to medium size business and are running a mail server, you need to work on securing your network beyond just changing IP addresses etc. Small network problems can lead to your IP showing up on an RBL and that effects mail coming from your mail server. Configuring an outbound firewall for port 25 with an exception for your mail server is also highly advisable.

MXToolBox has professional services available for Small and Medium Sized businesses which can eliminate these problems permanently. For more information on those services please fill out a form on our web page or call our number and a blacklist specialist would be happy to tell you more.

Thank you,
Wendy

Update: As of Feb, 5th 2009 the MxToolBox Forums have moved to http://community.mxtoolbox.com/forums