search for: greylisting

I wish to add options to sendmail INPUT_MAIL_FILTER(`spamassassin', `S=local:/var/run/spamass-milter/spamass-milter.sock, F=T, T=C:5m;S:4m;R:4m;E:5m')dnl dnl MAILER(cyrusv2)dnl INPUT_MAIL_FILTER(`greylist', `S=local:/var/run/milter-greylist/milter-greylist.sock') define(`confMILTER_MACROS_CONNECT', `j, {if_addr}') define(`confMILTER_MACROS_HELO', `{verify},

Hi, I have a working installation of Postfix and Dovecot that works nicely. I've added SpamAssassin, which does a good job of flagging spam. Now I wanted to add greylisting to my server. Here's what I did. $ sudo yum install postgrey Increase the greylisting delay. # /etc/sysconfig/postgrey POSTGREY_OPTS="--delay=300" Edit /etc/postfix/main.cf accordingly. smtpd_recipient_restrictions = permit_mynetworks, permit_auth_destination, permit_sasl_...

Is anyone using Milter-Greylist? Is there a repository out there with an rpm available? JP -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20060213/036d4b7e/attachment-0002.html>

I want to remove files but only if they are owned by a certain user and group. Basically I have this: find /var/spool/greylist -mmin +363 -exec rm -f {} \; I want to make sure it only deletes files owned by mail. Basically no matter what weird characters are in the file names I want to make sure it does not delete anything outside of /var/spool/greylist. I can add 'sudo -u' to it but

...nge the secondary MX setting in DNS to aaaaa.com? > > I'd recommend not having a secondary MX at all unless it is equipped > to reject invalid users and spam in all the same ways as your primary. Agree, but... > Otherwise it accept junk that your primary rejects Not exactly. If greylisting on primary is set, but on backup MX is not, still what is killed by greylisting by primary MX, almost never will come through backup MX. This is due to the same reason why greylisting is efficient: it trows off all that doesn't behave as mail server (thus never comes for re-delivery, and defini...

On Fri, February 13, 2015 11:52 am, Les Mikesell wrote: > On Fri, Feb 13, 2015 at 11:39 AM, Valeri Galtsev > <galtsev at kicp.uchicago.edu> wrote: >> >>> Otherwise it accept junk that your primary rejects >> >> Not exactly. If greylisting on primary is set, but on backup MX is not, >> still what is killed by greylisting by primary MX, almost never will >> come >> through backup MX. This is due to the same reason why greylisting is >> efficient: it trows off all that doesn't behave as mail server (thus &gt...

On 2019-06-19 04:01, Nicolas Kovacs wrote: > Hi, > > I have a working installation of Postfix and Dovecot that works nicely. > I've added SpamAssassin, which does a good job of flagging spam. Now I > wanted to add greylisting to my server. > > Here's what I did. > > $ sudo yum install postgrey > > Increase the greylisting delay. > > # /etc/sysconfig/postgrey > POSTGREY_OPTS="--delay=300" > > Edit /etc/postfix/main.cf accordingly. > > smtpd_recipient_restrictions...

On 19/06/2019 09:01, Nicolas Kovacs wrote: > Hi, > > I have a working installation of Postfix and Dovecot that works nicely. > I've added SpamAssassin, which does a good job of flagging spam. Now I > wanted to add greylisting to my server. > > Here's what I did. > > $ sudo yum install postgrey > > Increase the greylisting delay. > > # /etc/sysconfig/postgrey > POSTGREY_OPTS="--delay=300" > > Edit /etc/postfix/main.cf accordingly. > > smtpd_recipient_restrictions...

Hi, all. I want to use grey list in mail server, currently, i use postgrey to implement it. Any other recommended software? Thanks very much. ----- Best Regards. Zhang Huangbin - OpenBSD 4.2 -release, i386. - RHEL 5.1

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

Les Mikesell wrote: > On Fri, Feb 13, 2015 at 11:39 AM, Valeri Galtsev > <galtsev at kicp.uchicago.edu> wrote: >>> Otherwise it accept junk that your primary rejects >> Not exactly. If greylisting on primary is set, but on backup MX is not, >> still what is killed by greylisting by primary MX, almost never will come >> through backup MX. This is due to the same reason why greylisting is >> efficient: it trows off all that doesn't behave as mail server (thus never >&g...

...of the entries in /var/log/mail > are due to such events. every now and then a legitimate email can > be seen passing through. > > Oh, I also am now using (as of 2-3 years ago) milter-greylist, which > made an enormous contribution to preventing spam emails. > > Fred I tried greylisting a while back and was surprised how many were being rejected. But they were also getting through despite the rejection at my end. I use a 3rd party as my backup MX email address. If I'm down, they save up the email and forward it to me when I'm back up. But the greylist rejected emails ju...

...an MTA, and receiving spam ;) I know how to look at email > > headers. Spf and dkim is not solving anything here. > > You can configure this sort of thing in postfix, exim etc. The part of the mail system to do with RECEIVING emails. Not really a dovecot function. > > Look at greylisting as an option. That's basically delaying email from unknown senders. I use greylisting with my postfix. On Debian and Devuan th package is called 'postgrey'. What it does is, opon receiving mail from a new sender, reply with a protocol code that indicates "service temporarily...

Howdy. Over at http://greylisting.org/implementations/sendmail.shtml they list 5 different implementations - 1 perl and 4 C based. Does any one know if one is better than the other? Does it make a difference? Is it just a matter of preference? Thanks. Zyxian _________________________________ I learn more when something goes w...

...inux.fr> wrote: > > > .... > > My aim is simply to eliminate as much spam as possible (that is, before > > adding > > SpamAssassin) while keeping false positives to a minimum. > > > > The one thing that stopped the most spam on my last mailserver was > greylisting. Any mta that connects to you to send you mail, you check > against a white list, and if they are not on it, you reject the connection > with a 'try again later' code and add them to a grey list that will let > them in after 10 minutes or so. The vast majority of spambots don...

Hello all, About a year ago I set up a mail server on CentOS using this howto: http://wanderingbarque.com/howtos/mailserver/mailserver.html I managed to add amavisd-new with clamav and spamassassin. It runs very well, but it runs on CentOS 5.2, and if I try to upgrade, amavisd-new and clamav break. we are now also at the point where a backup mx will need to be implemented. If necessary I am

On Fri, Feb 13, 2015 at 11:39 AM, Valeri Galtsev <galtsev at kicp.uchicago.edu> wrote: > >> Otherwise it accept junk that your primary rejects > > Not exactly. If greylisting on primary is set, but on backup MX is not, > still what is killed by greylisting by primary MX, almost never will come > through backup MX. This is due to the same reason why greylisting is > efficient: it trows off all that doesn't behave as mail server (thus never > comes for re-...

On Fri, February 13, 2015 12:18 pm, Ken Smith wrote: > Les Mikesell wrote: >> On Fri, Feb 13, 2015 at 11:39 AM, Valeri Galtsev >> <galtsev at kicp.uchicago.edu> wrote: >>>> Otherwise it accept junk that your primary rejects >>> Not exactly. If greylisting on primary is set, but on backup MX is not, >>> still what is killed by greylisting by primary MX, almost never will >>> come >>> through backup MX. This is due to the same reason why greylisting is >>> efficient: it trows off all that doesn't behave as mail...

Whats a good antispam solution? I am using sendmail and dovecot 1.1. I came across dovecot's antispam plugin, but it seems it does not support 1.1 yet. I am also looking for something non-perl based. I am already doing some greylisting with sendmail milter. Any other good suggestions? If not, I guess I might have to downgrade back to 1.0 dovecot. Thanks

Hi Guys, Are you interested in a brief guide on how to set up postgrey (anti-spam greylisting) with postfix? I set it up today and it took me a while to get it working as the config is slightly different from that on many of the googled guides (many are debian/ubuntu based). The darn config file lives in /etc/sysconfig on RH/CentOS rather than /etc/default as mentioned in all the guides...