Failed mail

users
#1

I've been getting a *lot* of failed mail notifications from the
mailing list over the last few weeks.

After extensive investigation, there doesn't appear to be anything
wrong with my mailbox or mail servers, so I'm curious, how many other
people get this, either frequently or occasionally? Is it just me?

Mark Stanton

#2

Hi :slight_smile:
For some reason this post got blocked and had to be rescued by the moderators.  I'm not sure what is going on and my email client doesn't make it easy to read much in the headers to find out.

I've not seen many other messages from Mark in the list of blocked messages. 
Apols and regards from
Tom :slight_smile:

#3

It happened to me when one of my email hosting company's black listing services "lists" decided that the IP address of one of LO's servers was to be blacklisted. The IP address was blacklisted for a user 10 years before LO "bought" the IP address for the server.

It could be that your email client picked up something similar. If one of their lists shows that one of LO's IP addresses should be blacklisted based upon previous "users" of that address, then most of your emails to the list will not get through. Also your service can reject receiving emails from our servers as well.

You might want to contact your service and see if any IP addresses in your headers are in one their black lists they use. Maybe they can add LO back in a white list.

#4

Looking at the headers from the OP the message was re-routed 9 times. It might
have been blocked at any point in that list and tracing it would be very
difficult.

My first suggestion would be to try one of the "free" internet providers
(gmail, hotmail, etc.)to see if the message was still being blocked.

Tom

#5

Mark's Google A/c wrote:

I've been getting a *lot* of failed mail notifications from the
mailing list over the last few weeks.

After extensive investigation, there doesn't appear to be anything
wrong with my mailbox or mail servers, so I'm curious, how many other
people get this, either frequently or occasionally? Is it just me?

Mark Stanton

I occasionally get bounced mail from the different lists I'm on. It's
usually the recipient that has the problem.

#6

That would be correct. It's the incoming mail that's scanned, not the outgoing -- and too many spam checkers look only at the IP address. It doesn't matter if there are 4000 users on your shared, hosted server; as far as they're concerned if one's guilty, all are guilty, as if we have any say over who else shares the server.

Dave

#7

Dave

Actually outgoing mail is scanned, by your service provider. This is mandatory as to avoid their range of IP addresses being blacklisted. Some SP's have a less strict scanning and blocking policy, which then passes onto multiple transports servers to the receivers SP, who might use a stricter policy and they then block and submit the IP for blacklisting.

This is how many spam and maliciousware servers are discovered and shut down, from their sending content.

Regards

Andrew Brown