Gordan Bobic wrote:
Leigh S. Jones, KR6X wrote:
No one has mentioned that it's necessary to wait until
the possible spammer identifies his target to know
whether the target has him whitelisted.
Gordan wrote:
Whitelists aren't really practicaly on big setups. You need to block a
lot before
For weeks on end now I am being subjected to what I could call a reverse
spam DDoS attack for lack of better term. Some asshole is sending out
zillions of messages to non-existent users at legitimate domains, using
clearly non-existent sender addresses @myhosteddomain. It seems he is
specifically
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA512
Larry Moore wrote:
I've been testing against AD with the following config.
LDAP_URIldap://ad-server.domain.local:3268
LDAP_PROTOCOL_VERSION 3
[...]
LDAP_DEREF never
LDAP_TLS0
Which seems to
Arturo 'Buanzo' Busleiman wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA512
Larry Moore wrote:
I've been testing against AD with the following config.
LDAP_URIldap://ad-server.domain.local:3268
LDAP_PROTOCOL_VERSION 3
[...]
LDAP_DEREF never
LDAP_TLS
Zenon Panoussis wrote:
status=deferred (delivery temporarily suspended: connect to [my courier]:
Connection refused)
I would hazard a guess that you have either ran out of pre-configured
available threads for esmtpd to listen on (in which case increasing the
limits will help) or your system
This is happenning to us all. It's not a DDoS attack, just a spammer
spoofing addresses at your domain.
Zenon Panoussis writes:
For weeks on end now I am being subjected to what I could call a reverse
spam DDoS attack for lack of better term. Some asshole is
Leigh S. Jones wrote:
This is happenning to us all. It's not a DDoS attack, just a spammer
spoofing addresses at your domain.
Aha, thanks, that's good to know. Still, being a random target isn't any
better than being a selected one. The problem remains: courier shouldn't
choke, but does.
Zenon Panoussis wrote:
Enda Cronnolly wrote:
I would hazard a guess that you have either ran out of pre-configured
available threads for esmtpd to listen on (in which case increasing the
limits will help) or your system has run out of available resources to
provide esmtpd with new
Gordon Messmer wrote:
... when mail servers connect to courier's
smtpd and send RCPT commands with invalid users (or any other error),
smtpd starts tarpitting them -- after each failed command, it waits for
an increasingly long period of time before it replies and reads more
commands.
Hello !
I'm setting up an email server on debian etch using Postfix, Maildrop
and Courier-Imap with virtual user in a mysql database. It works fine
but I have a problem with thunderbird clients.
When there is a new mail in INBOX it blinks like if it was constantly
arriving, consequently the
Zenon Panoussis wrote:
In this case this feature turns against me and everybody else except
the spammer. What is hitting me is more or less innocent servers
bouncing spam (not 100% innocent because they shouldn't have accepted
that spam in the first place, but misconfigured != malicious). So
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA512
Enda Cronnolly wrote:
If you use authenticated binds the LDAP / AD server will verify the
passwords and courier does not need to query those fields from the schema.
In this scenario, courier will not be able to change the password either
hi
On Mon, 22 Oct 2007 [EMAIL PROTECTED] wrote:
I set IMAP_ENHANCEDIDLE=1 in /etc/courier/imapd (i.e. imap server inform
Do you realize this is in *seconds* and not in minutes ?
Essentially you're making courier check all folders for new messages
every second.
This should put a significant
Zenon Panoussis writes:
For weeks on end now I am being subjected to what I could call a reverse
spam DDoS attack for lack of better term. Some asshole is sending out
zillions of messages to non-existent users at legitimate domains, using
clearly non-existent sender addresses @myhosteddomain.
Arturo 'Buanzo' Busleiman wrote:
I see there is no LDAP_CLEARPW or LDAP_CRYPTPW option set. Any comments on
that, Larry?
This option removes the neccesity to access these fields.
LDAP_AUTHBIND 1
BTW, my account for binding with, [EMAIL PROTECTED] only has
'Domain Guest' group
Enda Cronnolly wrote:
Which seems to work. Which POSIX fields did you encounter problems with?
I see there is no LDAP_CLEARPW or LDAP_CRYPTPW option set. Any comments on
that, Larry?
If you use authenticated binds the LDAP / AD server will verify the
passwords and courier does not need
On 10/22/07, Sergiy Zhuk [EMAIL PROTECTED] wrote:
hi
On Mon, 22 Oct 2007 [EMAIL PROTECTED] wrote:
I set IMAP_ENHANCEDIDLE=1 in /etc/courier/imapd (i.e. imap server inform
Do you realize this is in *seconds* and not in minutes ?
Umm, it's an on/off flag.
##NAME: IMAP_ENHANCEDIDLE:0
#
#
hi
On Mon, 22 Oct 2007, Jerry Amundson wrote:
Do you realize this is in *seconds* and not in minutes ?
Umm, it's an on/off flag.
##NAME: IMAP_ENHANCEDIDLE:0
I meant IMAP_IDLE_TIMEOUT, doh...
I suspect it's set too low in the config.
--
rgds,
serge
18 matches
Mail list logo
