Re: Scoring Issue

2006-08-23 Thread Duncan Hill
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.


Re: Scoring Issue

2006-08-23 Thread aurora



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.
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Re: Scoring Issue

2006-08-23 Thread Anthony Peacock

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


Re: Scoring Issue

2006-08-23 Thread Duncan Hill
On Wednesday 23 August 2006 10:37, aurora wrote:

 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?

Eh - sort of.  Your SMTP relayhosts/smarthosts to your ISP.  The ISP server 
will usually do an MX query for the destination domain of the e-mail, and 
deliver to that server.  That server is not necessarily the post-box server - 
it may have to feed the mail to another server, and so on.

 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).

No, smarthosting isn't open relaying.

While dnsstuff.com may not list them, I'd still ask the customer to get the 
rules that scored the e-mail high enough for quarantine.  Only by seeing the 
rule names will you be able to determine what characteristics of the e-mail 
are triggering the quarantine.


Re: Scoring Issue

2006-08-23 Thread aurora



Anthony Peacock wrote:
 
 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
 
 

Thanks for your help Duncan and Anthony, I shall discount this reason for
being the cause of the problem. I will try and get the scores from one of
our customers.

Have a good day!
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