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2answers
75 views

Users accessing our email when traveling overseas are seeing strange SPAM behavior

I run technology for an international non-profit, so I have users that could be checking their email from Pennsylvania one day, Santo Domingo the next, and Kabul, Afghanistan, the next week. Recently, ...
1
vote
2answers
285 views

Why are default spamassassin rules not being applied to emails we generate?

My company uses a standalone spam-assassin install to test marketing emails, however, mail originating from us does not seem to run the full gamut of test. For example, Spam assassin has a default ...
8
votes
1answer
1k views

How to edit bad word filter in SpamAssassin?

How can I add several custom "bad" words into SpamAssassin, so emails that contains that words are marked as a spam? UPDATE one of the keys is to edit file /etc/mail/spamassassin, and to add badword ...
2
votes
1answer
332 views

Exchange 2013 IPBlockListProvider blocking some (but not all) matched IPs

I have configured our Exchange 2013 Edge Transport server to utilize several IPBlockListProviders including Spamhaus. While they work great most of the time, there are still some emails which despite ...
1
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1answer
31 views

How to configure SpamAssassin to set Atlassian JIRA notifigations to white list?

I have problem Atlassian JIRA email notifications. These notifications come to deleted by SpamAssassin some reason. So I need to know how to confirgure SpamAssassin to but these notications to ...
1
vote
1answer
80 views

Training a spam filter based on Mailman moderator's actions?

I'm planning a Mailman server, and looking for a good way to enable list moderators train a spam filter (likely to be either spamassassin or dspam). Has anyone come up with a good way to run training ...
1
vote
1answer
39 views

Remove spoofing email notifications

I am using CentOS release 6.5 (Final) with MIMEdefang and I am getting spammed by someone that uses an e-mail spoofer. He sends alot of e-mails from random-user@mydomain to the same random-user@...
1
vote
1answer
373 views

How to Block Web Crawler from Downloading File

Is it possible to block web crawler from downloading files (like zip file) in my server? I supposed to create a PHP script using cookies to track visitors specially web crawlers to login/register ...
0
votes
1answer
43 views

Exchange 2010 ignoring SPF record

we are using Exchange 2010 and have already setup SPF record for our authorized mail server IPs. As a test using our domain name i tried to send an e-mail from another computer on the internet which ...
0
votes
1answer
15 views

sbs 2008 exchange 2007 recipient filtering

We have an SBS 2008 server with exchange 2007 installed on it. We run a spamfilter in front of it. My problem is that whenever I use an invalid email address. invalid@mydomain.com it gets accepted by ...
0
votes
1answer
677 views

postfix header_checks - regex spanning multiple lines

I would like to create a spam filter that spans multiple lines in headers. This is my /etc/postfix/header_checks file: /^From:.*name[0-9]+@.+[\r\n]+To:.*name@domain\.com/ REJECT It's a valid regex,...
0
votes
1answer
225 views

Sieve - Redirect incoming mail for all mailboxes within domain to one specific mailbox

Is it possible to set a global sieve filter to redirect mail to specific mailbox within receiving domain. I understand I can simply point out where I want mail to go in a filter like bounce@example....
0
votes
1answer
602 views

Built in spam filters SBS2008

I have an sbs 2008 server with exchange 2007, its running the MS spam filters which picks up the spam fine, however a lot of senders cannot send email to the recipients of the sbs2008 server until ...
2
votes
0answers
392 views

Exchange 2007 delivering messages flagged as SPAM

I have an SBS 2008 box running Exchange 2007. Mail is delivered directly to the Exchange machine from the Internet via a receive connector (I have already advised people that it would be better to use ...
1
vote
0answers
29 views

Kolab 3 outbound mails spam detection

I installed Kolab on a local server and I need a way to allow it to reject spam mails before they are sent. One method that I found is to install postfix and spamassassin in another server and ...
0
votes
0answers
23 views

Exchange 2013 -Prevent Spam emails from outside but with my internal domain name

my apologies if this question was asked and answered previously. we have Exchange 2013 email server. We have been seeing some of the emails are coming from outside but using our own domain name which ...
0
votes
0answers
23 views

MessageLabs Blocking Email but Not Our Provider

My coworker and I am at a loss here. MessageLabs is blacking our client's emails from sending. However, MessageLabs isn't our anti-spam provider anymore. I checked SonicWALL to see if they're still ...
0
votes
0answers
18 views

SMTP Mail delivery failed for URIBL query refused

I'm experiencing some trouble with a single recipient because his mail server refuse my email. This is the error reply: SMTP error from remote mail server after RCPT TO:<xxxx@xxx.xxx>: 554 5.7....
0
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0answers
14 views

Hide High Scoring Entries from ASSP Daily Block Report

I enabled the daily block reports on ASSP, but they aren't terribly useful because they include all blocked messages, even those that have such a high score there is almost no possibility they are ...
0
votes
0answers
28 views

Can I use Spamassassin to classify text-only content?

I wish to know if I can use spamassassin classify text-only content? Right now I'm using the following command: spamassassin hello.txt But I'm getting the following warnings: 1.2 ...
0
votes
0answers
56 views

Postfix selectively bypassing the spam

I have Centos 7 installed and postfix as MTA on the server. Here is my anti spam postfix additional configuration: # main.cf ANTI SPAM disable_vrfy_command = yes smtpd_delay_reject = yes ...
0
votes
0answers
8 views

How do I whitelist a spam trigger in a SpamAssassin update channel?

Somehow one of our customer URLs seems to have gotten into some or all SpamAssassin rule sets that are distributed through update channels (we suppose). Mail provider that use Spamassassin mark all ...
0
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0answers
83 views

How to better block phishing spam due to heartbleed?

I imagine it won't take long for spammers to recognize that Heartbleed is an ideal way to do phishing. I am thinking of ways to mitigate the phishing risk, I mean just this time for the heartbleed bug,...