Perhaps you have some kind of mail server server hijack going on. If you haven't carefully checked for that...

I have reviewed the logs and do not see any type of hijacking.

Still curious as to what kind of email, and how many emails, over what period, causes this "too many concurrent connections" condition.  Seems to me that unless it was quite a large volume, it would not really be much of an issue with RoadRunner (Time Warner). 

 

Hence my suspicion that it's some kind of hijack. Is it possible that another machine on your LAN (or process on the same server as SM?... usually this does not happen) is acting as an SMTP sender - traffic going out the same WAN IP address?

 

It would be interesting to see the RoadRunner incoming SMTP logs. I know, I know, fat chance of that happening!

 

 

 

 

The IP address change resulted in the same kickbacks.

 

I called Time Warner and the customer rep insisted that I give her an account number.  Tried to explain that I am not a customer, but run a mail server trying to contact their customers.  They won't give me any information and said the customer would need to call in.  Dead end.

 

Tried contacting the company they hired to block out the world, Return-Path.  They don't answer the phone and I had to leave a message.  Also submitted their contact form.

 

I am now actively trying to get a feedback loop because it says that rate limits are increased to those who have a feedback loop.  But it has been pending approval since 3/29.

 

We basically have a membership database system that sends e-mail to 40 or 50 rochester.rr.com addresses at a time, based on entries made by members.  Very simple.

 

Ron

Resolution!  Getting an approved feedback loop seems to have fixed the "too many concurrent connections" issue.  Hopefully this thread will help other SmarterMail server admins if they find themselves in a similar situation.

 

Thanks!

Ron