Plesk 12.x / Linux :: SPAM Filter For Mailman Lists
Jul 18, 2014
I am happily running Plesk 11.5; with just one small but annoying persistent problem:
I have Clients with large mailinglistes
- SpamAssassin
- Server-wide greylisting
- DNSBL
is running.
But apparently many of the lists mail addresses have been harvested over the years. And as there is no easy way to use SA in mailman, I am down to greylisting only for list addresses.
This results in insanely large amounts of SPAM (-> moderation requests) on the client's lists. Is this behavior improved in Plesk 12?
Or can probably SIEVE filters work here - are those available to mailman? (probably not as they work in Dovecot?)
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Mar 17, 2015
I just upgraded to 12.x from 11.5, and now the messages to the mailman lists on the server are being rejected for headers being over 32K.
I finally saw this when joining the list myself to see why so many recipient servers are rejecting the mail. I see many instances of these:
Received-Spf: pass (server.mydomain.net: localhost is always allowed.) client-ip=127.0.0.1; envelope-from=thelist-bounces@clientdomain.com; helo=mail.mydomain.net;
and there's one towards the end with:
Domainkey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=clientdomain.com; b=RYN97cdOiqBdkm17GknWv0IMwOmsBHoK+eRaAjYey1vg6+jke2Z35Z1CFBIs/ZvrSslcc1X3kSzu/5SvHzuZVS1nB7zEPDBdr7jZ/Y3ViFccqDWNQbbFjpW9/7tVrFRssMv55gCMNnDwmgqK8WfU1vMkHwfdsuDnIkmB4OtAfqP9w=; h=Received-SPF:Received-SPF:Received-SPF:Received-SPF:Received-SPF:Received-SPF:Received-SPF:Received-SPF:Received-SPF:Received-SPF:
[Code] ....
How do I stop getting all those Received-SPF: headers prepended to the mailman list? It tags on a header that's well over 32K for a message that is less than 1K.
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Jan 11, 2015
I have configured the DNS zones for DNSBL service as follows;
"zen.spamhaus.org;b.barracudacentral.org;bl.spamcop.net"
but I continue to to get spam from ip adressess that are confirmed as blacklisted at the above zones by testing them at [URL] ...
Is there something that I have missed in the config.
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Aug 25, 2014
When this option is enabled on the Mail Server Settings page, the page loads with the bottom of the page in focus and not the top.
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Apr 3, 2015
Almost all mail adresses on my server is getting a spam mail from same mail marketing company everyday and i want to block them... Normally i just add the mail address to blacklist from "Spam Filter Settings" but this company is opening new addresses everyday and it is impossible to add all of them to blacklist so i need adding it as a regex to the blacklist...
The company i am talking about is opening mail addresses every day like below...
nrt150401@hotmail.com
nrt150402@gmail.com
nrt150403@yandex.com
nrt150404@mynet.com
As you can see all mail addresses begin with "nrt"+"6 digits of day"+"free mail provider", so right now i am using the regex below and it is already added to the blacklist but they are still able to send me... What can i do now?
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Jul 24, 2014
I can only add 100 addresses to the global address spam white list. I need to add more!
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Sep 8, 2014
A few months before I updated to Plesk 12 I noticed a huge jump in uncaught spam - I hoped the update to Plesk 12 might solve this but no luck.
I have now changed the spam sensitivity on my account 1, the idea being I would then whitelist the domains I want to get through but literally nothing is getting marked as spam. Users on other domains on the same server are reporting the same.
I'm using the following blacklist database lists:
zen.spamhaus.org;dnsbl.dronebl.org;bl.spameatingmonkey.net;psbl.surriel.com;b.barracudacentral.org
I have Plesk SpamAssassin 3.3.2 installed and set as the Spam handler.
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Apr 15, 2008
switched to ipower.com and not getting any help - really stuck as my customer wanted better spam filtering so I went to them on a recommendation and I do not know how to turn on and what is the best setting for spam filtering with their panel. Also using HORDE where I can set a filter using rules but it only works if I log on and hit apply filter so my customer still gets it in his in box -
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May 7, 2013
when im trying to enable spam filter for a particular email account i get this mysql error:
Error: SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry 'xxxx@domain.com' for key 3 (mail id i hid it for security reasons xxxx@domain.com)..
i searchd in the psa database but could not find any duplication...
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Sep 25, 2014
I have plesk 12 with dovecot+postfix and mailman installed but when i try to use mailman web interface I have 404 ...
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Jul 25, 2015
I want to embed a SSL certificate for mailman permanently in the server.conf file.
For Roundcube I've found a manual: [URL] .... (in German), but not for Mailman.
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Apr 3, 2015
There seems to be confusion and documentation conflicts around whether we should be whitelisting localhost or not when using Mailing Lists.
In this documentation it suggests that localhost is no longer needed, and in fact needs to be removed from the whitelist if Outbound Spam protection is to function correctly: [URL] ....
But on the other hand, this documentation suggests to add localhost to the whitelists, even though the warning says otherwise, and that outgoing mailing list mail will still be processed by Outgoing Spam Control. [URL] ....
Through trial and error, i've found that my mailing lists were not able to send mail to external email accounts unless localhost is whitelisted.
If I want all mail scripts to be going through the Outbound Spam Control, and also having my mailing lists working, should I be adding localhost to my whitelist?
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Aug 26, 2012
When executing "statistics" these errors occur:
# /usr/local/psa/admin/sbin/statistics
WARNING during statistics_collector execution: : statistics_collector: Unable to get dir size of /var/lib/mailman/lists/14
System error 2: No such file or directory
statistics_collector: Unable to get dir size of /var/lib/mailman/archives/private/14.mbox
System error 2: No such file or directory
statistics_collector: Unable to get dir size of /var/lib/mailman/archives/private/14
System error 2: No such file or directoryClick to expand...
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Mar 17, 2015
I have 2 domains on a CentOS Linux server running Plesk 11.0.9.
Domain1.com has several mailing lists, and they work OK visible at http://lists.Domain1.com/mailman/listinfo.
I just created a mailing list for Damain2.com. The list is created OK, but I can't acces it over the web http://lists.Domain2.com/mailman/admin/mylist1
Browser reports "Firefox can't find the server at lists.domain2.com."
What can I do to fix this? I need to edit the lists preferences.
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Jan 14, 2015
apparently Envelope-From, Sender and Errors-To headers are set to a wrong address for messages from mailman to the list-owner. This is particularly true for mails like 'message requires approval'.
It seems like the plesk<->mailman magic results in all list-domains being written to the end of /var/lib/mailman/Mailman/mm_cfg.py in the following format: add_virtualhost('list.DOMAIN').This in return results in mail headers Envelope-From, Sender and Errors-To of mailman system mails like described above being set to mailman-bounces@DOMAIN, where DOMAIN is the one from the last add_virtualhost entry.
In my opinion, this obviously is a bug. Maintainance mails from mailinglists have wrong headers set, often with a domain that belongs to a completely different customer than the mailinglist.
I found the following discussion on mailman-users mailinglist from 2008 which discusses the same issue - also a plesk setup: URL....
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Sep 11, 2014
we are in this situation:
OS: CentOS 6.5 (Final)
Plesk version: 12.0.18 Update #16, last updated at Sept 11, 2014 04:07 AM
PHP: 5.4.32
we created a new mailing list test1@domain.tld and we tried to send a message, as administrator, to the list and to the temporary users subscribed.But Mailman dones't send anything ! And we receive this error:
Sep 11 15:20:00 2014 (30314) All recipients refused: {'admin-mailinglist@domain.tld': (554, '5.7.1 <admin-mailinglist@domain.tld>: Relay access denied')}, msgid: <mailman.0.1410441595.30312.test1@domain.tld>
Sep 11 15:20:00 2014 (30314) delivery to admin-mailinglist@domain.tld failed with code 554: 5.7.1 <admin-mailinglist@domain.tld>: Relay access denied
Sep 11 15:20:00 2014 (30314) SMTP session failure: 550, 5.7.1 Command rejected, msgid: <mailman.2.1410441595.30312.test1@domain.tld>
All other services on this server seems to be ok, normail email sending, receiving, http... all right... but mailman no.
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Dec 27, 2008
Come across this a few times now, when I come to issue a new VPS find that a IP address is on a spam list from a previous owner of the IP range, even came across and IP block we got issued with a few null-routed IPs!
Has anyone, or hosting providers come across this? Where datacenter issue IPs with problems? On spam lists or worse . . .
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Aug 12, 2014
I am not able to add a new filter to fail2ban
If I go in plesk panel to: Home > Tools & Settings >IP Address Banning > Jails > managing Filters > add filter > type in name & filtercontent and save I get "Information: The jail filter was added". But i can not see the new added filter in the Plesk Filter List (still just the 12 Filters in the list).
On the filesystem > /etc/fail2ban/filter.d/ i can see the new file but with the extension .local - usulay the file is named like xyz.conf
The output of /usr/local/psa/admin/sbin/f2bmng --get-filters-list
[["apache-auth", "fail2ban"], ["apache-badbots", "fail2ban"], ["apache-common", "fail2ban"],
["common", "fail2ban"], ["plesk-courierlogin", "plesk-fail2ban-configurator"],
["plesk-dovecot", "plesk-fail2ban-configurator"], ["plesk-horde", "plesk-fail2ban-configurator"],
["plesk-panel", "plesk-fail2ban-configurator"], ["plesk-qmail", "plesk-fail2ban-configurator"],
["plesk-roundcube", "plesk-fail2ban-configurator"], ["postfix-sasl", "fail2ban"],
["proftpd", "fail2ban"], ["recidive", "fail2ban"], ["sshd", "fail2ban"], ["test", null]]
test is the name i choosed for the new filter and it seems the second field has "null" .....
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Sep 30, 2014
I want to create a Sieve filter for my email account using the Webmail interface of Horde.When I save a script at /ingo/basic.php?page=filters I get the following error message:Please note: My system language is German. See my translation of the German error messages within braces.
Code:
Skript nicht aktualisiert ("Script not updated"): exception 'Ingo_Exception' with message 'Beim Aktivieren des Skripts ist ein Fehler aufgetreten.
Fehlermeldung des Treibers ("Error while activating the script. Error message of the driver"): exception 'Ingo_Exception' with message
'Verbindungsaufbau abgelehnt' ("Connection refused") in /usr/share/psa-horde/ingo/lib/Transport/Timsieved.php:87
[code]...
Is there a way to modify / create Sieve filters without Horde?
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Jul 18, 2015
I want to send a notification (by an email to SMS gateway) when a specific email arrives. I see that Roundcube has a sieve filter option called "Send Notification" and it has three input boxes which have no tooltips and I am unable to find any documents telling me what to fill in those boxes.
The boxes are:
Method
Options
Message
The Message is obvious enough, but the other two?
For the method, I tried mailto:<me@myemailaddress.com>
I left the options blank, typed in a short message and tried to save the filter, but it gave me an error message "Unable to save filter - server error occurred". Annoyingly, it then wiped out what I had typed and started me with a blank rule again. I also tried without the < and > round the email address.
Any clues as to proper syntax and what the options are?
Also, is it necessary to have another action after the Send Notification action to file the email away somewhere, or will it just be left in the inbox anyway if the only action is the notification?
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Dec 3, 2014
I'm getting the following attempts every few minutes, I'd to put a stop to it with Fail2Ban but so far I've been unsuccessful. I get no IP bans in the Fail2Ban panel in Plesk 12.
Dec 3 23:24:14 XXX postfix/smtpd[2535]: warning: ca215.calcit.fastwebserver.de[146.0.42.84]: SASL LOGIN authentication failed: authentication failure
/etc/fail2ban/filter.d/sasl.conf
# Fail2Ban filter for postfix authentication failures
#
[INCLUDES]
[Code]....
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Sep 23, 2014
Seems this started when upgrading to a version of 12. It was working a few days ago and only seems to affect mailing lists. I found a google Cached thread here where Igor was assisting some folks as late as Aug 4 and referenced this was "reported to development (PPP-10678 for your reference)" it seems the forums on Parallels changed or something because several Google links are not working and resulting in having to used cached results for the two links below.
I am able to disable SPF and the e-mails go through just fine however this was working with SPF enabled before a recent upgrade.
Page 1
[URL] ....
Page 2
[URL] ....
This is the error message displayed in /var/log/maillog
Sep 24 01:38:35 controlpanel postfix/smtpd[3725]: connect from localhost[127.0.0.1]
Sep 24 01:38:35 controlpanel postfix/smtpd[3725]: D565017C013E: client=localhost[127.0.0.1]
Sep 24 01:38:35 controlpanel greylisting filter[3899]: Starting greylisting filter...
[Code] ....
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Apr 23, 2008
As a web host or ISP what do you think is best to do? do spam/virus filtering, or don't touch mail and let the user do what they want with it? (no chance of false positives, or lost mail, this way)
I work for an ISP and we have a barracuda and we get tons of calls from customers regarding lost mail and such as when you're filtering such a large varitey of mail its very hard to have a "perfect" filter. Mail that a car dealership gets and what a hospital get is totally different, for example.
Also in terms of web hosting the filtering will put a reasonable load on the server during peak spamming hours.
So just curious, as a ISP/webhost customer do you think your host should do filter or do you rather manage that yourself?
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Mar 18, 2015
We are successfully using fail2ban on our server (CentOS 6.6, Plesk 12.0.18), that is, jails running and blocking potential intruders
However, we tried to create a custom jail for the CMS that is being used by most of our clients.
I followed the instructions (Tools & Settings > IP Address Banning (Fail2Ban) > Jails > Manage Filters > Add Filter) and created the filter I wanted, but then it does not appear in the list, even though it displays a message reading that the filter was created successfully. Then, if I try to create a new Jail, the filter is not available from the list.
Looking at the directory /etc/fail2ban/filter.d/ I can find a file that has the same name as the filter I created, with a .local extension (the file name does not contain whitespaces or other special characters)...
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Oct 9, 2014
I have set up a vacation filter in Horde, but only in once in a while it really returns a vacation message, depending on who is sending an email. In most cases,the message arrives without triggering a response.The messagelog shows two scenarios, one for an successful vacation response and one for emails that fail to trigger a response.Sucessful event:
Oct 9 10:48:24 server dovecot: service=lda, user=xyz@mydomain.com, ip=[]. sieve: msgid=<408-EAS2941777BF41EEBE6640B691D3A00@axy.gbl>: sent vacation response to <guntherk@hotmail.com>
and then
Oct 9 10:48:24 server qmail: 1412844504.308454 starting delivery 21782: msg 33566019 to remote abc@externaldomain.com
then the message is stored into the users inbox.
Unsuccessful event:
Oct 9 10:55:39 server dovecot: service=lda, user=xyz@mydomain.com, ip=[]. sieve: msgid=<trinity-90b5e87d-183b-49b8-8e3e-d2f98b96df3e-1412844932925@uvw-com>: discarded vacation reply to <>
then the message is stored into the users inbox.
The actual version of Plesk (v12.0.18) on Centos 6.5 with Dovecot & Qmail is beeing used.
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May 28, 2009
We have identified that messages from your IP are being filtered based on the recommendations of the Symantec Brightmail filter as well as our internal Smart Screen Filters. The filter was initiated by Hotmail at (5/20/2009 12:00:00 AM) PST due to a large volume of emails that were sent prior to this time.
We will be happy to work directly with Symantec on your behalf to investigate and possibly resolve this problem. In order to move forward, we will need examples of the messages that were caught by the Brightmail filters.
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Jun 30, 2008
I am running a small hosting operation and would like to know more about SPAM filtering and controlling. SpamAssasin is installed on my server but it does not do much. I was looking into different solution with a anti-spam device and would like to know which one is recommended the most: sonicwall, barracuda or symantec? (total email addresses is less than at thousand)
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Jul 8, 2007
How much CPU & RAM load does your spam filter put on your VPS? It seems logical that the more mailboxes hosted, the more VPS resources the spam filter will consume - especially if any of the email addresses are targeted by spammers (or the user is careless and gives out their email address everywhere - as many do).
It's become so much with some of our subscribers that we have had to offer a hardware spam filter, to keep the load off the VPS. It's been great in that the VPS's protected by it have seen a dramatic performance increase....but are these subscribers unique in some way?
And so here is my question...how much CPU is everyone's spam assassin/spam filter using and how many mailboxes do you host on your VPS? very curious...
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Apr 9, 2007
Anyone else have problems with Yahoo Spam filters being overzealous? I recently setup a new domain and a few email accounts. After sending a few test messages to my Yahoo email, each one of them was flagged as spam. I changed the text to a more regular email, with no controversial words and still the same result. I notice that Yahoo regularly traps some newsletters I subscribe to in my spam filter, but rarely, if ever legitimate emails. I checked with my web host who informed me they are not on any spam blacklists and that I would have to contact Yahoo. Yahoo's help is quite a maze (designed to make you lose interest and move on), so before I continue hunting for how to contact Y!, I thought I would come here to see if this is a common problem (with a common fix).
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Aug 9, 2007
I'm wondering if theres anything I can install on the server that will either filter or track outgoing spam. I don't want to limit the number of emails sent per hour or anything, I just want to be able to maybe search through some flagged emails or something. Or if they send the exact same email more than x times it can disable their account... I'm not sure
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