[PLUG] Missing emails

[Roderick A. Anderson]

frank hunt wrote:
> Last week I was dropped from one of the yahoo groups I belong to due to 
> "excessive email bounces".  Yahoo groups has a bounce threshold set 
> that, if exceeded, triggers cancellation mail from that group.  The 
> stated reason for the last bounce was "no mx or a records for 
> frankhunt.com".  This appears to be an intermittent problem, since my 
> email is generally running fine.  As a test, I joined another yahoo 
> group that sends a test email every hour.  I joined yesterday at 6PM and 
> have only received four emails since (6pm, 7pm, 9pm, 11pm).  Something 
> is very wrong here.  My ISP is Comcast.  Incoming mail for my domain is 
> routed to my system by dynamic dns through zoneedit.  I use Comcast smtp 
> for outbound.
> 
> Does anyone have any ideas where I should look?

Start with your mail server logs.  Typically /var/log/maillog.  See if 
the connections are even coming in.

I just saw Aaron's post and I'll say I've had many problems with Yahoo. 
  Some of those directly related to DNS issues.  Each mail server Yahoo 
uses seems to make up it's own mind on what to do with questionable DNS 
entries.  Get this fixed and as those changes propagate look at the logs.

I just tried a telnet to your server and it responds quickly.  But that 
made me think of a problem an ISP I worked for had with Yahoo and its 
groups.  User Quality.  The typical postfix install has a header_checks 
file that catches Yahoo Groups all the time.  Six (6) of the same 
character in a row.  Your logs should show this as 'ACL 3' message.


Rod
-- 



> 
> Thanks,