similar to: dnsbl feature for dovecot

Hi all, Just out of curiosity: is there anything we can do, on the samba side, to counter the recent ransomware attacks? (or limit the damage done) I'm thinking like: limit the number of files per second a client (workstation) is allowed to edit, or some other smart tricks..? It would be nice if samba could be an extra layer of defense. Something perhaps a vfs module could help with..?

On 11/04/2019 11:43, Marc Roos via dovecot wrote: > A. With the fail2ban solution > - you 'solve' that the current ip is not able to access you It is only a solution if there are subsequent attempts from the same address. I currently have several thousand addresses blocked due to dovecot login failures. My firewall is set to log these so I can see that few repeat, those

after having my own dnsbl feeded by a honeypot and even mod_security supports it for webservers i think dovecot sould support the same to prevent dictionary attacks from known bad hosts, in our case that blacklist is 100% trustable and blocks before SMTP-Auth while normal RBL's are after SASL i admit that i am not a C/C++-programmer, but i think doing the DNS request and in case it has a

I wonder if there is an easy way to provide dovecot a flat text file of ipv4 #'s which should be ignored or dropped? I have accumulated 45,000+ IPs which routinely try dictionary and 12345678 password attempts. The file is too big to create firewall drops, and I don't want to compile with wrappers *if* dovecot has an easy ability to do this. If dovecot could parse a flat text file of

Well, I stumbled onto zimbra.... I have a Scallix system built, but still have some rough edges to try to smooth. Like the way it works with sendmail, no dnsbl's will work as sendmail sees all mail as coming from locohost (scalix). Still battling that one which is when I ran across Zimbra. So, this made me start wondering. Are there other exchange server-like products out there? Has

Gents, I have added the following to /etc/mail/sendmail.mc and rebuilt it trying to control spam. I still get about 25 spam messages a day. Is there something else that can help control spam? Thanks jerry --------------------------- dnl # dnl # dnsbl - DNS based Blackhole List/Black List/Rejection list dnl # See http://www.sendmail.org/m4/features.html#dnsbl dnl # FEATURE(`dnsbl',

On 11/04/2019 14:33, Anton Dollmaier via dovecot wrote: >> Which is why a dnsbl for dovecot is a good idea. I do not believe the >> agents behind these login attempts are only targeting me, hence the >> addresses should be shared via a dnsbl. > > Probably there's an existing solution for both problems (subsequent > attempts and dnsbl): > >>

what anti-spam for you used ? dspam?spammassian? amavisd-new ? what is best ?

Just a comment about the documentation for postfix integration when using receipient delimiter and delivery of user+foo at domain.ext to user at domain: http://wiki.dovecot.org/LDA/Postfix I had some issues to get this working, so thought I'd share my experience. Dovecot version 1.2.rc3. Postfix version postfix-2.7-20090511. I have no local (unix) mailboxes, everything is delivered to

Dear Friend, I done configuration using RBLSMTPD with WHITELIST, but I don't know it is correct. Please check files below are corrects. Thanks Adriano === FILE WHITELIST.DOMINIO.RBL. ==== $ttl 900 whitelist.dominio.rbl. IN SOA host1.xxxxxx.com. root.xxxxx.com. ( 2006112002 ; serial; 3600 ; refresh period (1 hora); 900 ; retry time (15 minutos); 1800 ; expire tiem (30 minutos); 900 ;

On 12/04/2019 08:24, Aki Tuomi via dovecot wrote: > Weakforced uses Lua so you can easily integrate DNSBL support into it. How does this help Dovecot block? A link to some documentation or example perhaps? > We will not add DNSBL support to dovecot at this time. Is there a reason why you will not support this RFE?

At least the policyd-weight in lenny seems to generate quite different patterns. For example the 'rate' is output multiple times in some situations, the 'check from' is omited sometimes and somehow those log messages have a trailing blank. With those patterns logcheck stays silent again. Signed-off-by: Mathias Krause <minipli at googlemail.com> ---

Hi everybody, I am trying to work with quota. I use postfix and dovecot with a sql backend. Below you'll find my configuration. Everything works except for the quota part. It doesn't seem to see the quota and doesn't respond to the sender that the client is over its quota. versions: postfix-2.5.20070531-mysql dovecot-1.0.2-mysql Thanks for the help in advance. My Settings: #

On 04/27/15 11:08 AM, Darac Marjal wrote: > On Mon, Apr 27, 2015 at 03:46:30PM +0100, Jorge Bastos wrote: >> Hi, >> >> >> >> Some extra help. >> >> How would I make hotmail accept my emails and not make them go to junk >> folder? >> >> Is there any trick to do this? > This isn't really a dovecot issue, but you can start with

Scott Robbins wrote: > On Wed, Aug 10, 2011 at 05:11:12PM -0400, m.roth at 5-cent.us wrote: >> This is annoying. I've been trying to get motion working correctly on CentOS 6. First, there was no ffmpeg rpms. Now, I try to install it, and <snip> >> I've run into problems with libfaad being missing before. Here's the real question: how were the ffmpeg and ffmpeg-libs

On 03/04/2015 09:45 PM, Dave McGuire wrote: > On 03/04/2015 03:37 PM, Oliver Welter wrote: >> Am 04.03.2015 um 21:03 schrieb Dave McGuire: >>> Am 04.03.2015 um 20:12 schrieb Michael Orlitzky: >>>> Please add [DNSBL] support to iptables instead of Dovecot. It's a waste of >>>> effort to code it into every application that listens on the network.

Hello, I''ve recently begun looking at Puppet as an alternative to Cfengine and I have a couple of questions. 1) Besides the information posted on the Puppet website, are there any critical differences between Puppet and Cfengine? 2) Does Puppet allow for client-specific file text manipulation. For instance, in Cfengine I can add a line of text to a file if the line doesn''t

Hello CentOS Docs People! I recently used the Amavisd howto to setup a couple of mailservers, which saved me from hours of searching online and reading novels of documentation. Since Ned is taking a little break from the Amavisd page, I would like to help contribute. There were a few things I'd like to add, like GTUBE/EICAR testing and SELinux config lines. My wiki username is WilliamFong.

Dear All, its a offtopic question but really apprecite if someone would advise n help i have been running a mil server with sendmail and have sbl-xbl.spamhaus.org as my dnsbl. i had other servers which are alredy out now that is relays.ordb.org and dsbl.org have already been out of my sendmail config. any one knows of ny other servers i could add in my sendmail config apprecite ur help

IMO, First secure your entry points.. Mail webserver and proxy and the exit points. ( your users environment in my case windows 7/10 desktops.) Im waiting until trevor has the antivirus vfs is ready for samba 4. @David Disseldrop, you know the status about that, since it was you call to get it in samba. ;-) (https://github.com/fumiyas/samba-virusfilter/issues/23) I've seen good work but