AntiSpam

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Various techniques are used to prevent email spam (unsolicited bulk email). No technique is a complete solution to the spam problem, and each has trade-offs between incorrectly rejecting legitimate email (false positives) vs. not rejecting all spam (false negatives) - and the associated costs in time and effort. Anti-spam techniques can be broken into four broad categories: those that require actions by individuals, those that can be automated by email administrators, those that can be automated by email senders and those employed by researchers and law enforcement officials.

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We have a Barracuda spam/Firewall 300 here that's got about 30,000 blocked/deferred messages in the outbound queue that I need to get deleted. I can't even bring up the outbound queue in queue management. I spent over an hour with Support and they cant connect with the guy couldn't figure out how to connect with it....that's a different issue. How can I clear these out? Its killing our mail throughput?? I know its got SSH but I can't connect to it. I'm not local to the system but I've got full admin rights. I cant even pull the export out of it.
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MIM Survival Guide for Service Desk Managers
MIM Survival Guide for Service Desk Managers

Major incidents can send mastered service desk processes into disorder. Systems and tools produce the data needed to resolve these incidents, but your challenge is getting that information to the right people fast. Check out the Survival Guide and begin bringing order to chaos.

I manage a small network (84 users) We currently have a Barracuda Email Security 300 that is getting a bit long in the tooth and is in need of replacement. So, with that said I am looking at Fortimail (Because we have a Fortigate 200D) and Barracuda Essentials for Email Security.

I do know that in terms of price that Barracuda solution is cheaper but I hate having to evaluate based on price (But that's what the higher Up's see) Has anyone used the Fortimail solution? is it more or less the same compared to the Barracuda solution? I do think both offer "sandboxing" and that is something I am interested in..
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Hello,

Looking for suggestions for the best anti-spam solution (software, not hardware)

Currently using Spamexperts, but still receive 5-8 spam messages per week, perhaps this is the best possible without blocking valid / clean messages?

I am looking for a hosted solution.

Thank you,
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Hi,

Any good free anti virus software that i can download and install on my window 10 laptop?
any good reliable dependable ones for free. please advise
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Trying to create an send connector to first send e-mail to our spam filter service.  

Here is the configuration:
Type=Internet
Address Space:  Type=SMPT, Address=*, Cost=1
Network:  Route mail through the following host:  Smart Host:  NA0100.SMTPOUT.COM
Source Server:  equal our server.  

All outbound mail is being delivered, but it is not reaching the spam filter site.  Their technical support thinks it is the fault of the Send Connector and they are lacking in Exchange expertise.

Inbound works great and I would like the added benefits of the outbound for this customer, especially since they are a sensitive site.

Thank you for your assistance.
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Hi Experts,

is it possible to activate the antispam filter in EXCH2013 ?
How to check if its activated ?
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Hi, we are deploying our own Exchange Mail server but do not have budget for Email security devices, such as Dell Sonicwall or Barracuda. How can anyone please suggest the best AV software (license) for Exchange Mail server? we did some research and found out some options like Kaspersky , Avast , ESET, AVG but have not decided yet. Thank you.
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I was told that Malware bytes works with Norton and wouldn't be a redundant package to install on my pc.
I'm looking for second, third and fourth opinions.
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Like millions of others, I wake up to view many spam messages on my devices. I dislike it immensely. Is there a string or are there strings of words and phrases that I can use without trying to come up with all of them myself that I can exclude? For example, I NEVER want to see any email or sms that contains: "you have been selected" or "congratulations" or "important new breakthrough" or "blue pill". You get the idea. I don't mind creating rejection rules but I would like to start with one creation session that would catch a large percentage of crap and bury it before I even see it. I don't want to get so deep into this quest that I subscribe to any email forwarding service. I will also add, in case it gives anyone some ideas, that I have my own domain and can add and delete any number of emails I wish. I have learned that (obviously) since a questionnaire or sales inquiry indicates "we will not share this data with anyone" is pure @%#$^!%$. Miffed.  I use Outlook on my PCs.
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Dear Experts

We have email accounts of the prospects, customers who purchased and who did not purchase,  over the years this has become huge list and is available in sales force automation software , we are using SugarCRM, the list contains third party contacts. as email campaigns on this lists are making our domain black listed and messages are getting delivered to spam.  please suggest is there any software which validates and separates the good mail accounts and bad mail accounts , please suggest the software or any such service available
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Free Tool: Path Explorer
LVL 8
Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Dear Experts

We used act-on marketing tool to send email campaigns approx 4000 contacts as of not 77 opened and 45 bounced, but few who have opened they had received the mail in spam, these list is opted-in, how can for few it goes to inbox and few it goes to spam, few said they got it inbox and few say they go it in spam both who said this are from gmail account. can you please suggest what would have gone wrong. how to make sure 100% inbox delivery and necessary measures please

Thanks in advance.
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Having a spam problem when I send the emails directly from my server, I asked my client to open an email account on her server.
I used smtp authentication with email address and email password.
Here is the detailed answer, can anybody explain me the reason that I cannot send and the solution please.
Thank you.


PEAR_Error Object
(
    [error_message_prefix] =>
    [mode] => 1
    [level] => 1024
    [code] => 10006
    [message] => Failed to send data [SMTP: Invalid response code received from server (code: 550, response: 5.7.1 Rejected by spam filter (17211ed8-34a9-11e7-9a8c-336c9f1d8145) [CSP-02])]
    [userinfo] =>
    [backtrace] => Array
        (
            [0] => Array
                (
                    [file] => /opt/cpanel/ea-php56/root/usr/share/pear/PEAR.php
                    [line] => 577
                    [function] => __construct
                    [class] => PEAR_Error
                    [type] => ->
                    [args] => Array
                        (
                            [0] => Failed to send data [SMTP: Invalid response code received from server (code: 550, response: 5.7.1 Rejected by spam filter (17211ed8-34a9-11e7-9a8c-336c9f1d8145) [CSP-02])]
                            [1] => 10006
                            [2] => 1
                            [3] => 1024
                            [4] =>
                        )

                )

            [1] => Array
                (
         …
0
I started receiving the  same  response  from various email addresses

"SMTP error from remote mail server after end of data: 550 5.7.1 Rejected by CYREN-40-Customers Valid spam filter"

When I check this link http://www.cyren.com/ip-reputation-check.html 
It says the below altough I have been sending for at least 2 years with the same ip and address

Risk Level:      Unknown
 Description:      The IP has only recently started sending mails, and therefore still has an Unknown reputation

How can I handle the reject?
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Implement SPF check on my Trend Micro IMSVA but a spam mail come through with status "Neutral". Is it possible to tune the config.ini file to block this type of email ?


Received-SPF: Neutral (as1.abc.com: 207.210.xxx.1xxx is neither permitted nor denied by domain of xxxxx@yahoo.com) identity=MAILFROM; client-ip=207.210.xx.xx; envelope-from=xxxx@yahoo.com; helo=server.xxxx.com)
Received: from server.xxx.com (unknown [207.210.xx.xx])      by
 as1.abc.com (Postfix) with ESMTPS      for
 <enquiry@abc.com>; Mon, 24 Apr 2017 22:21:31 +0800 (HKT)
Received: from xxx.hostwindsdns.com ([104.168.xx.xx]:57942
 helo=yahoo.com)      by server.xxx.com with esmtpsa
 (TLSv1:ECDHE-RSA-RC4-SHA:128)      (Exim 4.89)      (envelope-from
 <xxxx@yahoo.com>)      id 1d2ero-0008KH-Io
C--temp-SOP_IMSVA_9.0_SPF.PDF
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I have configured my spf on the gateway. Is there any tool that can spoof my company domain such that I can stimulate a spoof email to my mail server and see whehter the gateway can block it or not.

Thx
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We have a problem where emails to certain domains are being blocked as spam, it’s gradually getting worse. We get bounce messages such as “5.3.0 - Other mail system problem 550-'Administrative prohibition”, “5.0.0 smtp; 5.3.0 - Other mail system problem 553-'Blocked Using Spam Pattern, Your Message May Contain The Spam Contents'”.
I have checked all the major black lists and all the minor ones that I could find, I’ve also checked reputational databases and all are showing as good for our domain and IP addresses. We are being blocked by major email management orgs such as messaglabs, mimecast and Sophos devices so I’m fairly confident that an org such as Sophos has blacklisted us and is propagating this to customers and partners.
I’m trying to work with the IT departments of affected recipients but they have their own problems and naturally aren’t prioritising our issue. Can anyone think of a way of finding out who has blacklisted us, avenues to go down, backdoors I can knock on, etc?
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How to configure DMARC / SPF and DKIM on my Exchange 2010 such that it can check the incoming email address of our company domain is delivered only dedicated IP address (ie, our antispam gateway).

Thx
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Any idea where the SMTP log file  is located in my IMSVA (Trend Micro InterScan Messaging Security Virtual Appliance) ? I need to backup the log file daily.

Thx
0
Hi

Please provide me where I can find more information about behavior-based and anomalies detection for Symantec Endpoint Protection 14.0.

Many thanks in advance.
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Forrester Webinar: xMatters Delivers 261% ROI

Guest speaker Dean Davison, Forrester Principal Consultant, explains how a Fortune 500 communication company using xMatters found these results: Achieved a 261% ROI, Experienced $753,280 in net present value benefits over 3 years and Reduced MTTR by 91% for tier 1 incidents.

Hi

Please provide me where I can find more information about behavior-based and anomalies detection for Trend Micro Office Scan 11.0.

Many thanks in advance.
0
Hi

Please provide me where I can find more information about behavior-based and anomalies detection for McAfee Endpoint Security 10.

Many thanks in advance.
0
Hello Experts,

I am in a position where I need to make an email address visible on a website. Naturally, I’d much prefer not to have it harvested by spammers, or at least significantly reduce that possibility. I have an idea on which I would appreciate an opinion:

From the online research I’ve done, displaying an image of the email address would seem to be one of the most efficient ways of protecting it (I understand it is technically possible to optically scan such an image, but at this point in time is too resource-intensive for the vast majority, if not all web scraper bots).

However, the image approach puts a significant burden on users, as they have to manually type in the address in order to send a message. So it is not an ideal solution.

Now, I understand that bots typically don’t read javascript (again, too resource-intensive). This makes me wonder if it would make sense to work JS so that clicking on the email image brings up the user’s email client and inserts the email address into the “To” field, as would happen with a regular email link ? For clarity, following the image click, JS would do all of this, not anything in the HTML / CSS code. And JS would not display the email address on the page as I have seen with other strategies. The address would only be displayed by the image on the web page.

My online research didn’t turn up any discussion on this specific tactic, so, I thought I would post it here to ask if anyone has any experience using this …
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Ok... I need some help clarifying details in an email header. Some one I know has been fished/whaled (which ever it is). I want to know how it was done.
A genuine email was sent from Seller@realdomain.co.uk to Client with genuine bank details for a transfer. This was followed up with a scam email requesting a change of bank details. BUT the scam email came from Seller@realdomain.co.uk... (I am trying to find out if the seller@realdomain.co.uk was hacked)

Both seller and client domains are on 365 and have SPF records setup. So I would expect spoofing emails to be rejected.

Anyway, below is the header... I would like to understand what it says, these are some of the questions I want answered:
1. is it a spoof email or was it sent through 365 servers (there is no trace in the seller sent items, but could have been deleted)
2. It looks like the email "return" address has been setup as "seller@fakedomain.com.uk" to ensure replies do not reach "seller@realdomain.co.uk" and alert the seller of the scam. I didn't think it was possible with 365 to modify the return address?
3. Can we tell if this was sent through a microsoft portal or outlook?
4. I can see an SPF fail on the header... does this mean the email failed its SPF check but was still allowed through?
5. What other information can be gained?

Header
Received: from DM2PR0401MB0973.namprd04.prod.outlook.com (10.160.98.139) by
 BN1PR0401MB0961.namprd04.prod.outlook.com (10.160.79.12) with Microsoft SMTP
 Server…
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Hello experts,

our Barracuda appliance has been having an issue, and we are planning to replace this shortly. For now, we would like to create fail-over   Email Anti-Spam/Anti-Virus Filtering service. Can someone please advise the best way to approach this or implement?
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We are using Google Apps for Business and we are running into a problem where one of our email addresses is being spoofed to multiple clients of ours. I have implemented Google DKIM, an SPF record with a -all hard failure, and DMARC, all of which have not helped. I have verified that no has logged directly into the Gmail account in question to send these emails, and log files from the remote servers that I could access show that the IP addresses that these spoofed emails come from are indeed coming from random locations (China, Russia, etc. Not Gmail's servers).

I believe the problem started when a year or two ago one of our computers was compromised and someone probably had access to our contact list. That computer is gone, but my guess is the address list is still floating around the internet. The spoofed emails seem targeted to companies in that contact list. I believe the problem is that the companies receiving these spoofed emails have the spoofed email address (and possibly the entire domain) in their whitelist filter, thus bypassing the SPF and other spam checks. But I can't be 100% sure. As far as I can tell and have been told, all of the spoofed emails come from the one single email address of the computer that was compromised over a year ago.

What can be done to remedy this? Are there any other methods we can use to force remote mail servers to check that the emails are from Gmail's servers?

Thank you
0

AntiSpam

4K

Solutions

5

Articles & Videos

6K

Contributors

Various techniques are used to prevent email spam (unsolicited bulk email). No technique is a complete solution to the spam problem, and each has trade-offs between incorrectly rejecting legitimate email (false positives) vs. not rejecting all spam (false negatives) - and the associated costs in time and effort. Anti-spam techniques can be broken into four broad categories: those that require actions by individuals, those that can be automated by email administrators, those that can be automated by email senders and those employed by researchers and law enforcement officials.