Date: Sat, 23 Oct 2010 22:46:40 +0000 From: Marwan Sultan <dead_line@hotmail.com> To: <m.seaman@infracaninophile.co.uk> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: RE: My mail server flagged spam! Message-ID: <SNT103-W52F6B6EA05DD5995B51C419A5F0@phx.gbl> In-Reply-To: <4CBFD2AE.7080402@infracaninophile.co.uk> References: <SNT103-W395850DA5D1C7E9488FB919A5D0@phx.gbl>, <4CBFD2AE.7080402@infracaninophile.co.uk>
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Dear Dr. Matthew.=2C
=20
When my client or any clients uses the web mail that i have configured=
=2C=20
then everything works fine NO spam problems and email will be
received by hotmail=2C gmail and vise versa.
=20
I found out that this particular client complaining because they use
outlook express NOT the web mail.
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they configure their outlook express to use SMTP user/password
with mail.clinet_domain.com as incoming/outgoing.
=20
even if they send from xyz@client_domain to admin@MyDomain.com
both are in same server=2C I will still receive it as SPAM.
(They are sending from outlook.)
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looking at spam log=2C and why its scored as spam.. here is a copy.
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pts rule name description=20
---- ---------------------- -----------------------------------------------=
---=20
0.9 RCVD_IN_PBL RBL: Received via a relay in Spamhaus PBL=20
[95.66.68.100 listed in zen.spamhaus.org]=20
0.0 HTML_MESSAGE BODY: HTML included in message=20
0.0 BAYES_50 BODY: Bayesian spam probability is 40 to 60%=20
[score: 0.5019]=20
2.2 TVD_SPACE_RATIO BODY: TVD_SPACE_RATIO=20
0.1 RDNS_NONE Delivered to trusted network by a host with no r=
DNS=20
2.8 DOS_OE_TO_MX Delivered direct to MX with OE headers=20
=20
=20
As you see 2.8 for DOS_OE_TO_MX
and 2.2 for TVD_SPACE_RATIO
=20
I have looked for DOS_OE_TO_MX
and it says because client is sending "directly" to MX records?
well! i asked them to use "mail.server_name.com" for income/outgoing
for outlook express..but still the same error and email is scored as spam.
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Any help is highly appreciate it.
=20
- Marwan
=20
> Date: Thu=2C 21 Oct 2010 06:42:06 +0100
> From: m.seaman@infracaninophile.co.uk
> To: dead_line@hotmail.com
> CC: freebsd-questions@freebsd.org
> Subject: Re: My mail server flagged spam!
>=20
> On 21/10/2010 01:10=2C Marwan Sultan wrote:
> > if I check that domain in mxtoolbox.com
> > it complains "Warning - Reverse DNS does not match SMTP Banner"
> > could it be the SMTP banner flagging the mail as spam?
>=20
> This is certainly possible. It would add spam points on my servers.
>=20
> The address in question is the one presented by your mail server during
> the SMTP dialogue -- the first line it sends in fact. Something like this=
:
>=20
> EHLO smtp.example.com
>=20
> By default it will use the hostname of your server=2C but you can overrid=
e
> that.
>=20
> It is this address that you have to be really strict about: the address
> should resolve to the IP that the server connects via (not necessarily
> the IP of the server if there are NAT gateways involved)=2C and a reverse
> lookup of that IP should return the name again.
>=20
> This name used in the EHLO banner doesn't have to be anything to do with
> the addresses on the e-mail=2C except in as far as either side is using
> SPF and you have chosen to add that information to the SPF selector(s).
> SPF seems to be going out of favour now=2C and sensible mail admins
> didn't make accept/deny decisions entirely on pass/fail of SPF tests=2C
> but still=2C for best results with a mail system=2C you should take care =
to
> get that right.
>=20
> Cheers=2C
>=20
> Matthew
>=20
> --=20
> Dr Matthew J Seaman MA=2C D.Phil. 7 Priory Courtyard
> Flat 3
> PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate
> JID: matthew@infracaninophile.co.uk Kent=2C CT11 9PW
>=20
=
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