Hi,
aurora wrote:
Duncan Hill wrote:
On Wednesday 23 August 2006 10:19, aurora wrote:
Basically, we now get alot of customers calling us saying that they have
not received our email and it's because it has been held on their spam
server with a score of 6, even though its a plain text email! We have
only
been getting these issues since we have switched the configuration over.
If SpamAssasin doesn't increase the score due to this extra hop/relay, I
can discard this as being a cause of the problem.
Relaying itself is a fundemental part of how e-mail works, and when I last
looked, SA doesn't hit you for doing that.
As the customers who are spam-quarantining for the rules that hit - you
may
find that a relay server is listed in a blacklist or similar.
Hi Duncan, thanks for the quick response.
As I understand that relaying is a fundamental part of delivering an email,
I'm guessing this configuration is not normal. Our SMTP server hits the
ISP's SMTP server which then hits the customers SMTP/POP server. In most
cases, your SMTP server will just find a direct route to the destination
server and only the sending server and receiving server will be involved
without a server being "in the middle", no?
Is it not classed as a form of open relaying, even though there is a form of
authentication (IP check) on it? Both our external IP and the ISP's email IP
are not listed on any blacklist (checked with dnsstuff.com).
Again, thanks for the quick reply, it's appreciated.
Your setup does not sound any different to many others.
We are shooting in the dark here, you need to ask your customers to
provide you with the reasons that they blocked your messages. As they
are the ones that are blocking they are the only ones who can tell you
what the reasons are.
If they are using SpamAssassin and they can provide you with the list of
rules that hit your emails, then this list might be able to give you
advice on how to stop this happening in the future. Without that we are
just guessing.
--
Anthony Peacock
CHIME, Royal Free & University College Medical School
WWW: http://www.chime.ucl.ac.uk/~rmhiajp/
"If you have an apple and I have an apple and we exchange apples
then you and I will still each have one apple. But if you have an
idea and I have an idea and we exchange these ideas, then each of us
will have two ideas." -- George Bernard Shaw
