The anti-spam tag has no wiki summary.
-3
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0answers
54 views
What is SPF record on company.com to let mailer.com send mails
Question: What is a valid SPF record on company.com so that an email can be sent from mailer.com with from address: bla@company.com ?
More info: I want to send out e-mails from mailer.com with a ...
2
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1answer
48 views
How do I configure my domain and web application so the emails send from the latter are not blocked as spam?
I have a WordPress site that needs to send notifications to an email address. I would like the from field from this emails to be an address on my client's domain.
I dont know much about email ...
3
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2answers
39 views
Which RBL's does sophos use?
Anyone know where I can find the a list of which RBL's Sophos use's? I have checked their website with no luck, and currently awaiting a response from their technical support.
Thank You in advance
...
0
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1answer
93 views
Mailscanner and amavisd-new comparison
I'm going to implement a mailfiltering gateway for my company. I'm going to use Postfix, with a PostgreSQL back-end.
The question would be: how to best implement the antispam measures.
Mailscanner ...
22
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7answers
673 views
How can I attract more Spammers hitting my Spam traps?
Currently I have a number or domains that are set up as Email Spam traps. So if I get mails on that domains I can be certain that it is ~100% Spam. I'm using this information to temporarily defer ...
0
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0answers
28 views
Ambition to build a 'resend'-feature on antispam server
I am currently running MailScanner on a server, although considering to replace it by MailCleaner.
I would like to be able to resend e-mail that passes through the anti-spam server. This seems to me ...
5
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2answers
167 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.
...
0
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0answers
47 views
Can't edit IP Allow List in Exchange 2010
I'd like to add some IP addresses to the IP Allow List in Exchange 2010 using Exchange Management Console (Organization Configuration; Hub transport; Anti-spam).
The feature appears to be Enabled, ...
2
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2answers
58 views
finding a spamming computer on the network [closed]
Possible Duplicate:
How do you detect a spambot on your network?
Our network of 120 windows machines has 1 or more computers sending spam. Is there an easy way to find that machine, without ...
1
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2answers
342 views
How to read the “MS ForeFront” antispam report in email header?
I'm trying to diagnose why emails I'm sending out from my server's IIS SMTP Pickup Folder are getting bounced back occasionally.
One tech from a receiving company who couldn't receive the emails ...
1
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1answer
211 views
How to limit the From header to match MAIL FROM in postfix?
SMTP clients are required to pass user authentication before sending emails to other domains (relay). And we can use smtpd_sender_restrictions to make sure the MAIL FROM address matches the ...
0
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1answer
66 views
How shared hosted web servers deal with spam (flood) attacks?
I want to know how shared webhosting or other types of it deal with Spam issues.
Example: stop serving the website for a period of time, and how much is it? ...
23
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4answers
391 views
What happened to all the spam?
Don't get me wrong, I'm mostly glad that this happened. However, I want to make sure that the reasons for it happening are sound - rather than there being a problem with our methods. I'd like to ...
1
vote
1answer
81 views
What contact email addresses are more likely to lower the amount of spam that you will receive? [closed]
I am wondering if you can obtain a significant decrease in the amount of spam you receive by choosing a "special" email address for contact.
Examples:
office@, support@, contact@ - probably high ...
0
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1answer
116 views
quarantine mailbox not receiving quarantined items exchange 2010 anti-spam content filtering
On exchange 2010, i have the anti-spam features installed on the hub transport.
I have the content filtering enabled, with quarantine if the scl is higher than 7. this is the only option i have turned ...
0
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3answers
116 views
Top Infected Machines - Dealing with Threats?
I printed out a list of the top 25 infected machines (associate machines only)
a bit of detail..
associate machines are only for sales associate. the domain login is the same for every machine, ...
0
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2answers
2k views
How to setup a reliable SMTP server on Windows Server 2008 R2
I know there are SMTP services out there which you can pay to send e-mails with but surely it's not that difficult to set up one of your own.
How can I set up an SMTP server on Windows Server 2008 R2 ...
1
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4answers
854 views
Is there any alternative to SpamAssassin?
I'm looking for alternative to spamassassin. Anyone tried rspamd from Rambler.ru (https://bitbucket.org/vstakhov/rspamd/wiki/Home)?
0
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2answers
66 views
Blocking spam from free e-mail providers
I'm having a bit of an issue with a recent spam wave on my network. We're using a variety of e-mail checks that have been quite successful thus far, but these e-mails are presenting a problem.
They ...
1
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3answers
173 views
Anti-spam on par with Gmail's?
Currently, I rely on Gmail to weed out SPAM because the anti-spam software on my hoster's mail server is so crappy, and besides, it doesn't provide a good web UI so users can tag false negatives and ...
0
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4answers
204 views
1
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1answer
552 views
dspam vs spamassassin vs bogofilter
I just wonder what their pros and cons are, and which is better for production use. Thanks~
1
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1answer
74 views
Looking for open source anti-spam systems, any suggestions? [closed]
Basically speaking, we have a forum-like systems and every one can post their demand/supply information. So we need an anti-spam system to avoid the spams like the ads, politic-sensitive, porn, etc.
...
1
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2answers
40 views
Smtp Server external to external
I have hMailServer set up on my windows server 2008 machine.
I just started noticing in the logs that there are a lot of entries
related to people trying to send external to external mails (obv ...
1
vote
4answers
140 views
Increase in Spam Effectiveness
Over the last few days, I've seen a drastic increase in the amount of blatant spam making it inside of my organization. (Exchange 2003 behind Ironmail, Symantec Mail Security.) My security products ...
1
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3answers
268 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 ...
0
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1answer
80 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 ...
0
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5answers
169 views
Finding out source of an IP address
I have an IP address and time of being spammed that I'd like to find out who it bleongs to.
I found that the IP belongs to the ISP: cogeco cable and that it is a commercial account.
Is it possible to ...
1
vote
1answer
99 views
What is the email SPF entry for sending from Yahoo?
I have a client that is sending email from a Yahoo! Plus account as if from her own domain. Is there a way to set up the SPF record so that it covers all of Yahoo!'s outgoing servers? i.e., what do I ...
0
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2answers
176 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 ...
5
votes
4answers
1k views
How to send 100,000 emails weekly and avoid being considered spammer
I have a mailing list with 100,000 email addresses, and I have to send it an email weekly.
What application/program/webapp/script/etc do I have to use to send 100,000 emails weekly and avoid being ...
0
votes
6answers
373 views
How do you prevent spam being sent by your users?
So, for the third time in about two weeks (maybe less), one of our customers has had their password compromised, and a spammer was sending mail with their username and password using our webmail. As a ...
5
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4answers
215 views
How do you test a new email filtering system?
What method do you use to test or evaluate potential new email filtering systems before you set it up on your production network?
I am particularly interested in methods that are appropriate for ...
1
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1answer
118 views
Anti-spam software for Cent OS 4.8 w/ cPanel
My company has a dedicated server running CENTOS Enterprise 4.8 with cPanel. We host our own websites as well as about three dozen client websites. We recently migrated our clients over from a ...
0
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2answers
244 views
I found a Ukranian spammer and have the exact query, IP and access time. What next?
Before I turned on comment moderation, these guys would leave comments meant to steal my Google juice (by getting an inbound link). I can still see them visit... the question is
what should I do ...
2
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2answers
160 views
Spam Analysis Tool
I looked but did not see a question related specifically at spam analysis tools. What I want to do is run our auto generated notification emails through some tools to determine their spam likelihood ...
2
votes
7answers
453 views
Whether to filter (for spam, viruses) outgoing mail or not?
The purpose of this questions, is to understand pros and cons of filtering outgoing mail.
I am admin of an ISP. As usual, users, who have dynamic IPs, can send mail only with ISP's SMTP server. ...
0
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2answers
282 views
Adding spam addresses to SpamHaus and SpamCop DNSRBL
I have a Postfix e-mail receiving server setup.
I have applied the following setting in my Postfix main.cf file:
smtpd_recipient_restrictions =
reject_unauth_destination,
reject_rbl_client ...
1
vote
1answer
394 views
Adding mail header if postfix DNS based RBL (realtime black hole) check fails
I have setup a receiving Postfix mail server. Here i have custom code written that parses the whole mail received by postfix and use the headers, body and attachments separately for different uses.
I ...
0
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3answers
576 views
Mail server (Debian/Postfix/Dovecot) and rejected emails
I have a mail server running Debian Lenny with Postfix and Dovecot.
I send and receive emails without any problems with most of my contacts using
Google Mail or Yahoo Mail but some of my contacts ...
0
votes
2answers
693 views
Can IIS automatically block IPs based on certain queries?
Can IIS7 automatically block IP addresses if certain queries are tried against my server?
Like, is it smart enough to figure out that it's getting spammed by similar requests from the same IP under a ...
2
votes
1answer
212 views
Is there any point to Teergrubing anymore?
I'm just installing a new mail server, using Exim 4 and the sa-exim Debian package. Part of the configuration uses Teergrubing (or tarpitting), and while it sounds like a great idea in theory, I also ...
0
votes
5answers
962 views
what is the best antivirus and antispam addon tools for postfix?
Can you guys share some thoughts/experiences for antivirus/antispam for postfix.
What is your antivirus and antispam combination used in your system?
any particular reasons behind it?
notable ...
0
votes
2answers
3k views
How do I lock down Exchange 2007 to accept email from a specific range of IP addresses only?
I have implemented a new Exchange 2007 server running on Server 2008 in our domain. We previously used Exchange 2003 running on Server 2003 and I had locked the Default SMTP Connector down so that it ...
1
vote
1answer
160 views
SPF for various servers
Somewhat related to:
http://serverfault.com/questions/4354/how-do-i-configure-spf-for-multiple-domains-on-a-server-also-allowing-gmail-as
I have a MX record for my primary domain (j.com) that is my ...
3
votes
3answers
330 views
Hosted Anti-Spam Service vs. Anti-Spam Appliance
We're currently using Content Catcher, a hosted spam solution. For less than what we pay them per year, we could purchase an anti-spam appliance to run in house. From a simple dollar perspective, it ...
3
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5answers
165 views
What Security Suite to choose?
What security suite would you recommend in an environment consisting of roughly 120 PC's and some 30 servers? Environment is MS only, so Exchange and ISA must also be supported.
3
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2answers
596 views
postfix skip spam checks for authorized SMTP
Is there any way to configure postfix to skip spam/antivirus checks for those smtp connections that are SMTP-AUTH'ed? I would like to keep all the standard checks for external smtp traffic, but for my ...
0
votes
2answers
2k views
Open source antivirus/antispam/web filtering gateway
I want to install firewall which have following features Antispam, Anti Virus, Webfiltering, Userwise access, Intrusion prevention etc. is any product from open source )(ie untangle/ipcop) any other ...
1
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1answer
798 views
Setting up a Barracuda Spam Filter
We have just purchased a Barracuda Spam Firewall 300, we have set it up but are having problems authenticating with our Exchange server (2007). I spoke to Barracuda about it and they said I need to ...
