The spam-filter tag has no wiki summary.
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Microsoft Exchange 2010 Sender Filtering - No blocked senders, but mail is rejected
I have an Exchange 2010 Edge Server that is bouncing emails with "rejected sender" messages. Message Tracking confirms that this is being done by the Sender Filter Agent. The blocked senders list in ...
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1answer
67 views
Barracuda Spam Filtering vs. other enterprise level solutions [closed]
I am looking for comparison of enterprise level spam filtering solutions in the context of Barracuda Filtering - pros and cons kind of summary.
I did hear a lot of negative noise about Barracuda Spam ...
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3answers
108 views
Are there spam filters that check email headers?
Are there spam filtering technologies that examine email headers?
For example; X-PHP-Origin header can contain an IP address that is on a blacklist; are there spam filters that would catch this?
I ...
-3
votes
1answer
71 views
Blocking unsubscribe spam
I have SpamAssassin turned on and using RBL in the WHM control panel using the lists from spamhaus. However, these type of e-mails are getting in. Are there any ways to stop them?
Example of the ...
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2answers
109 views
How Reverse DNS does what it does
Hopefully this is not a stupid question, but I cannot find a clear cut answer. Can someone please inform me exactly what 'source address' is used in Reverse DNS? Does rDNS pull the IP address from ...
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2answers
4k views
Allow email from a particular sender through spam filter
We are running exchange 2010 and are using the built in anti-spam feature.
We have set up Content Filtering, IP Block List Providers, Sender ID, Sender Reputation and it filters out most of the junk ...
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0answers
88 views
How to test SpamAssassin and spam filters
Which is the best way to test SpamAssassin's functionality and configured Spam filters?
I'm aware of the Generic Test for Unsolicited Bulk Email. but I would like to have a "real" Spam test that ...
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2answers
87 views
How often do MXLogic lists get updated?
Some domain refused to accept email from my domain due to MXLogic filtering.
I've sent an email to falsepositives@mxlogic.com and they responded promptly that they changed their records.
Question: ...
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1answer
85 views
Blocking out going spam with Exim [closed]
I know it is possible to use RBLs and wordlist filtering with Exim but can't seem to find any examples. The closest thing I've found so far is http://www.sput.nl/software/exim.html which is more ...
2
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1answer
516 views
Is there any way to prevent Excel 2007/2010 from including .bin files in saved .xlsx files?
In case anyone isn't aware, the new Office 2007/2010 files are actually a type of archive file.
Since deploying some recent (ish) Microsoft updates to our client machines, we've been getting lots of ...
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2answers
87 views
DNS: MX listing points to google apps and A listing to my own server. Can I send emails from my own server without being classified as spam?
Linux DNS networking question:
If an MX record points to IP address 111.111.111.111 and A record of a domain points to 222.222.222.222, can I still send emails from 222.222.222.222 on the behalf of a ...
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0answers
143 views
Exchange 2010: Archive rejected SPAM
we have Exchange 2010 AntiSpam features enabled and set up to reject mails with SCL 9.
In the tool "Microsoft Exchange Troubleshooting Assistant" I can check which mails are rejected (Date, Sender, ...
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2answers
729 views
GMail suspects confirmation email in stealing personal information
When user registers on my web site, web site sends user email confirmation link.
Subject:
Please confirm your email address
Body:Please open this link in your browser to confirm your email address:
...
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2answers
80 views
Block by file type, but just file extension using MDaemon
I've had users sending copyrighted files (songs, videos) to each other over email. I blocked the file extensions .mp3 etc. What some users have done is to rename files to .doc etc.
I cant block .doc ...
2
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2answers
956 views
How do I allow end user 'blocked sender lists' to work even if the server manages spam filtering?
Client filtering in Outlook 2010 is disabled when the server is managing spam filtering. Unfortunately I have a few high profile users that prefer to spam-block mailing lists rather than unsubscribe, ...
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3answers
1k views
Why does gmail flag my server emails as spam?
I recently moved my server to a new slice at slicehost and since, gmail has been flagging my email as spam. I have added domain keys, created a SPF record, have reverse dns setup, and my ip is not ...
10
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1answer
655 views
How to configure amavisd-new for only scanning on particular senders/servers?
I'd like to know how to configure amavisd-new to only scan for Spam on particular clients (IPs, CIDRs or hostnames) or alternatively sender's email domain.
I know that it is possible to do it on a ...
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2answers
758 views
Barracuda tagging email with 'date grossly in the future.'
I have a Barracuda 300. Granted it's running on some old firmware and the Energize updates are quite outdated. I'd like to update them, but, not my financial decision to do so.
Starting around the ...
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2answers
1k views
How can I filter spam from yahoo's servers?
In the last few months my mail server has been getting massive amounts of spam from yahoo.com's mail servers. Each one appears to be from a different Yahoo mail free account.
The spam is all coming ...
2
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4answers
766 views
Best practices for spam filtering
I've been running an amavisd-new, spamassassin, postfix setup for a while to help crush spam on our incoming e-mail servers. The setup I'm using is a few years old at this point and its about time to ...
2
votes
1answer
82 views
Outgoing emails from China based VPS rejected or marked as spam
I just switched email service provider from Google apps to a VPS with a Hong Kong host. Now I find a huge part of all outgoing emails ending up in spam boxes and in some cases getting totally rejected ...
2
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1answer
1k views
Recommended way to implement Postfix 'before-queue' SpamAssassin filtering?
After some discussions with colleagues and the relevant depts. in my office, I have come to the conclusion that for my Postfix server, I must implement a 'before-queue' filtering. The reason is that ...
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3answers
293 views
My mailserver is getting stuck in http://cbl.abuseat.org/
I have a small system that sends about 15 email/day to my personal email account. I have set up the web form so that the users email is set as sender when I send the email to my inbox so it's easy for ...
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3answers
123 views
Do mail servers and/or spam filters care about a domain's root A record?
I have a domain which I only use for email adresses. I don't host any content there.
My provider added an initial A record at the root of my domain which points to a server that delivers a ...
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1answer
216 views
Processing items with SpamAssassin and sa-learn
I have been working on getting SpamAssassin up and running for awhile now and am pretty close to being finished. However, there is one last thing that is grinding away at me that I can't seem to ...
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2answers
1k views
Bayesian filtering for Exchange 2010
So here's the deal.
Basically, I am looking for a convenient way to get spam from my Exchange 2010 mail server to my spam filter/proxy (whatever you want to call it) in a mail format for ...
2
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2answers
3k views
Optimal parameters set for Postfix “smtpd_recipient_restrictions”
we've inherited the DNS from another ISP and now our mail server is bombed by about 1000 emails per minute, 99.99% of these emails are just spam. We're trying to optimize the filtering/rejecting the ...
2
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2answers
168 views
Best techniques to make sure that emails are not marked as spam
We have a service that requires a registration and the registration process sends some confirmation emails.
These emails say in a three-line message that you have to click some link with a generated ...
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2answers
298 views
97% of emails reaching IronPort/Domino are Spam
We have a Domino mail server protected by Iron Port (v7.1.5 I think). Iron Port reports an average 96%-97% of emails are stopped by reputation filtering, and around 3% of emails are clean messages.
...
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5answers
2k views
What's a good alternative to the Barracuda Spam Appliance? [closed]
Searching for Barracuda alternatives didn't yield much. Can anyone recommend a good spam appliance like Barracuda?
I want something that will strip bad stuff out like if I have a .txt attachment ...
2
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2answers
243 views
Outbound business email being marked as spam in other organizations
Wanting to make sure I've done everything I can to prevent our legitimate email from being incorrectly marked as spam by other companies:
Exchange 2010 with SP1, no major changes in 6 months.
I've ...
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1answer
66 views
How to Block Spam on Server from Certain Service Providers
I host my blog on a hosted VM - I am in control of the server. Right now, my blog is getting massive amounts of spam from Ubiquity Server Solutions (aka Nobis Technology Group). I've identified this ...
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5answers
2k views
Open Source or lower-cost alternatives to Barracuda Spam Filter
I'm aware of SpamAssassin-based solutions, but I'm looking for a free or low(er) cost spam filtering solution that's similar in functionality to the Barracuda Spam Filter. The Barracuda works well, ...
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2answers
138 views
would this header cause the email to be flagged as suspect?
Authentication-Results: [snip].mail.[snip].[snip].com
from=someDomain.com; domainkeys=neutral (no sig);
from=someDomain.com; dkim=neutral (no sig)
Received: from 127.0.0.1 (EHLO ...
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2answers
37 views
Recommendation for supplementing spamassassin [closed]
We are using spamassassin to filter outbound mail generated from forms on web sites. I am not very satisfied with the amount of spam we are catching and so I am hoping to find a good application to ...
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5answers
1k views
Barracuda spam filter alternative - virtualization/appliance friendly?
I've sold and deployed Barracuda spam and web filters for years. I've always thought that the functionality was good (Barracuda Central, easy interface, effective filtering), but the hardware on the ...
5
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3answers
482 views
How to modify a message, so it will be for 100% recognizable as spam by Exchange junk e-mail filter
I have an sendmail server, sitting in front of my Exchange server. This server filters spam with SpamAssassin (and does it incredibly well!), but it merely tags spam messages with appropriate header ...
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1answer
249 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 ...
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2answers
108 views
Recommend a Canadian spam filtering service? [closed]
I have been tasked with setting up a new email system for a health care provider that needs to ensure all of their data (including email) is stored within Canada. The plan is to run SBS in-house, and ...
1
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2answers
835 views
Configure postfix to filter email into hold queue
I would like postfix to send all emails received on SMTP off to an
external process, which will decide whether to allow them through as
normal, or whether to put them into the hold queue (or another
...
1
vote
6answers
309 views
I'm hosting reseller and I got spam problems. Please help to solve
Our provider suspended our account with 5000+ clients and their sites. The reason was that the whole IP range was blacklisted by SpamHouse, but our provider did not explain what emails, form what IP ...
0
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1answer
201 views
Exchange 2007 Content Filter is being to aggressive
Some senders are getting the following return message:
Error transferring to mail.server.com; SMTP Protocol Returned a Permanent Error 550 5.7.1 Message rejected as spam by Content Filtering.
...
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2answers
640 views
Route emails directly from Exchange to SharePoint?
We're trying to use the Microsoft-supplied Help Desk template for our SharePoint help desk site (running on WSS 3.0) and are having problems trying to create tickets from emails. When working ...
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5answers
700 views
How to configure email server to send lots of transactional emails
My organization is currently outsourcing email delivery to an SMTP service provider. We're considering bringing that back in house to deliver our own emails.
We send about 5k transaction emails per ...
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3answers
425 views
how to stop outgoing email spam
running an email system using roundcube, with about 200 people using it.
99% of them do as they are told and only email clients they have already spoken to, however 1% of them decide to bulk spam bcc ...
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1answer
173 views
Where/How Can Spam False Positives Be Reported To MessageLabs?
An email I sent got flagged as spam by MessageLabs on the recipient side. I'd like to proactively engage MessageLabs to tell me more about why this got quarantined (or at least fix it).
Is there ...
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2answers
1k views
How does Outlook 2007 decide if it should redirect an e-mail to the Junk E-mail folder? [duplicate]
Possible Duplicate:
Is there any way to see why Outlook's client junk mail filter is marking a message as spam?
My Question:
How does Outlook 2007 decide if it
should redirect an ...
1
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2answers
65 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, ...
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2answers
78 views
Trust e-mail from our domain(s)
We have several notification e-mails that get generated by various systems for our users. I've been asked to make sure all e-mail to [anything]@ourcompany.com doesn't wind up in our users' junk ...
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2answers
267 views
spamassassin attachment scanning
I have just started using spamassassin for my email server.
I am unable to find an answer for following questions:
Does spamassassin scans attachments?
If not, what plugins can be used for the ...
