Unsolicited e-mail, comments or posts, often sent out in large volumes; possibly but not necessarily commercial in nature

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8
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1answer
177 views

Is there a way to get spamassassin to score the top lines of a message body more heavily?

A lot of spam is getting through the filter on the mail server I run with the relatively simple trick of starting with few lines of (incredibly obvious) weight loss or other scam text at the top, ...
5
votes
1answer
178 views

Disable Outlook Web Access Junk filtering in Exchange 2013

By default, Outlook Web Access (OWA) in Exchange 2013 seems to move suspected junk mail to the Junk Email folder. This is undesirable behavior in most of my environments because we have Barracuda Spam ...
3
votes
1answer
72 views

What is the benefit of using DKIM to sign Content Type?

DKIM has the ability to sign headers on a per-header basis. I looked at Google's headers, and they DKIM sign ContentType. What is the security benefit of signing ContentType?
2
votes
1answer
27 views

Postfix and smtpd_client_rate_limit to detect compromissed accounts

Some of our clients are administrators who need to send corporative messages to no more than 300 clients, specifying all of these clients together in the "To:" fields, instead of individual messages ...
2
votes
1answer
52 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
158 views

Email Delivery to Gmail Breaks After Implementing DomainKey

I have a personal VPS that I use as a personal email and web server. Today I was diagnosing email, and I created a test account at Gmail. At first I was not implemented DomainKey and only SPF was ...
1
vote
1answer
416 views

How to find which local process is sending spam on a Windows Server 2008 server

I am managing a Win Server 2008 system with a number of hosted web sites. Recently I found that something was sending spam through our SMTP server. The logs indicate that the connections were being ...
1
vote
1answer
65 views

Sending multiple emails and not marked as spam using Domino

I would like to send mass emails to about 2,000 addresses. However, if I send them at once, then antivirus engines mark them as spam suspects Is there a functionality or feature that we can provide ...
1
vote
1answer
4k views

Exchange 2003 mail non-delivery (NDR), spam activity? events 7002 & 7004

Windows Server 2003 Small Business Server SP2 Exchange Version 6.5 (Build 7638.2: Service Pack 2) This network has been neglected and has been having email problems for years and was on many ...
0
votes
1answer
13 views

How to findout where spam is coming from with EXIM?

I've tracked down the user which was sending out spam but I am wondering how can I determine where the script is that is doing it? I ran a scan looking for the mail() function but found nothing. ...
0
votes
1answer
24 views

Exchange 2010 SPAM filter

We have Exchange 2010 with the built in SPAM filter installed. Was wondering if there is a way to check what messages have been blocked. We have a customer trying to send an e-mail and it never ...
2
votes
0answers
69 views

Restrict IMAP access for a given account to only one IP address in Exchange 2013

I've created a "spam crawler" account with full access to all mailboxes in an Exchange 2013 environment to get messages in the junk folder to feed the Bayesian filtering running on SpamAssassin in a ...
2
votes
0answers
75 views

Single MailCleaner installation for two distinct domains with user authentication

I would like to use one MailCleaner installation to handle two distinct domains as one centralised spam management system, sharing configuration and mainly the bayesian filtering database. Both ...
2
votes
0answers
195 views

How to identify the user/computer that is relaying spam through a mail server?

For the past couple of days, at certain intervals, a huge load of email is dumped on my Exchange 2003 server and relayed out until it gets blacklisted everywhere. Nothing like this happened for many ...
1
vote
0answers
80 views

Spamassassin && Exim: redirect spam emails

I want to redirect all email, being marked as SPAM to special mailbox. Works with Exim4, SpamAssassin Server version 3.3.1 on CentOS 6.5. Rules from Exim in acl_check_data block: warn message = ...
1
vote
0answers
60 views

Email spam/hack and odd apache logs around the same time

A friend of mine started getting failed delivery notices yesterday (June 23rd, 2014) on all of his domain e-mails, and so he asked me to look into it. I have been looking through various logs and his ...
1
vote
0answers
111 views

How do you view quarantined mailbox on Microsoft Exchange 2010?

When certain emails are quarantined for high spam scores, exchange sends a default email to the recipient stating that the email was quarantined for x reason. How do you view the quarantined emails? I ...
1
vote
0answers
111 views

Prevent spam being forwarded by Postfix (while locally delivered to a Junk folder)

We have a pretty standard Postfix/Amavis setup where we use the Dovecot LDA to deliver mail locally. Amavis passed spam mail and we use Sieve to drop it in the Junk folder of the user. The problem is ...
1
vote
0answers
75 views

Can someone explain SMTP Callbacks when BATV is enabled, and when to issue the verification?

This Wikipedia article describes how SMTP verification of the MFROM may have issues if BATV is enabled. Servers that reject all bounce mails (contrary to the RFCs). To work around this problem, ...
1
vote
0answers
301 views

Server emails are considered as SPAM only by Gmail

I'm developping a service which lets users send our content via email to their friends. The problem is that those emails often ended up as Spam. So I went through all the stuff to make my server send ...
1
vote
0answers
184 views

How do I use qmqtool to list emails from a specific envelope sender?

Occassionally a user's email password will become compromised and the spammer will flood the Qmail queue with 10,000+ emails sent through a specific user's account. I know how to use qmqtool to remove ...
1
vote
0answers
71 views

Communigate: writing rules

We have Communigate on our mail server. Recently we moved to Dr.Web antivirus + antispam. When it checks mail for spam it writes spam score in 'X-Spam-Level: ', where number of '' signifies the spam ...
1
vote
0answers
40 views

How to use google as a spam filter but also use mailing lists on my own server

I have an existing Linux server that already processes incoming email using some custom email handling scripts (in Perl) that do somewhat complex processing such as routing certain special addresses ...
0
votes
0answers
12 views

Mail sent from my subdomain being marked as spam?

Okay, I recently rented a droplet from Digitalocean and wanted to do some testing before I start my site. Am using Ubuntu 14.04 + Vesta CP which comes with EXIM. So one thing I'm grappling with is ...
0
votes
0answers
16 views

Find the source of spam-script

We have a shared hosting cgi-server with apache2+php fcgi and dma as mta (it forwards messages to mail relay) - it's Debian Wheezy - on it and with ability for clients to run perl/cgi scripts.There's ...
0
votes
0answers
76 views

Barracuda & URLBL_BC rule

Solution I am using is integrated with barracuda spam filtering. My access to barracuda is limited (this is not a full admin account), hence I may not see some global settings. Today barracuda ...
0
votes
0answers
79 views

Forwarding email through a dummy relay to avoid blacklisting

I have a mail server that allows individual users to forward mail to other providers. The server performs the usual anti-spam checks, but spam still gets through occasionally -- especially with the ...
0
votes
0answers
18 views

It's possible to have a Distributed Bogofilter database?

We've Bogofilter running on our AntiSpam system and I would like to distribute it's database through the two MX gateways that we have. I know it's possible using SpamAssassin with a shared MySQL ...
0
votes
0answers
41 views

Global Inbox Rules in Exchange 2013

There's a way to create global inbox rules in Exchange 2013? I'm not referring to the Transport Rules, because it does not perform what I would like to. It would be nice to force a Inbox Rule, ...
0
votes
0answers
128 views

How to send emails without ending up in Junk/Spam folder

I have installed a mail server in order to send e-mails using my own domain name. I've read many articles about how not to end up in Junk folder. I have done what those articles said: Added MX ...
0
votes
0answers
48 views

How to check why SpamAssasin Bayes filter not working?

I have exim 4.77 with spamassasin 3.4.0 on Debian, I identify spams by myself and send to sa-learn, which seems working. But I have never receive spamscore by Bayes, I check the emails which ...
0
votes
0answers
414 views

553-Message filtered - HELO Name issue?

I am having major issues sending from my SBS2011 machine to Message labs server-13.tower-134.messagelabs.com #553-Message filtered. Refer to the Troubleshooting page at ...
0
votes
0answers
731 views

Exchange 2010 Mail stuck in Queue - HUB Version 15 - Journaling

I have issues with my queue on my Exchange 2010 Hub Transport server. When I do a Get-Queue, I can see over 1000 emails on queue and the next hop is Hub Version 15! I don't have a clue what a Hub ...
0
votes
0answers
70 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 ...
0
votes
0answers
99 views

SpamAssassin keeps crashing during cleanup of child pid due to SIGCHLD: interrupted, signal 2 (0002)

I am running SpamAssassin on an Ubuntu Server with a quad-core processor and 7.5GB RAM. I am running a Mail Server on a separate Windows Machine and this Mail Server passes messages to the ...
0
votes
0answers
30 views

How do I set up autoreply for some accounts on an anti-spam gateway?

We have an anti-spam gateway set up which forwards mail to our exchange 2003 server. This works fine, but now I need to add out of office replies. I'm trying to do so with gnarwl, but so far don't ...
0
votes
0answers
53 views

Spamassassin internal DNS resolution?

Short Version: Is it possible to configure spamassassin to perform its own recursive DNS lookups instead of using the server specified by the OS? Long Version: I've got a collection of dedicated ...
0
votes
0answers
37 views

Information to keep in a spam black/whitelist

Assuming that I want to black/whitelist specific messages as spam/not spam, what message/sender info should I collect in that blocklist? The address will be most likely faked so I assume the 2 ...
0
votes
0answers
28 views

OS X Server Mail Forwarding Spam

In Server.app 3, managing a Mavericks server install, under the Users tab, when I select a user, click the settings cog, then click Edit Mail Options. I have a user setup with Mail should be: ...
0
votes
0answers
132 views

trace security hole for culprit random “post” mail files

Running a shared cpanel server with so many layers of security, but somehow someone is able to upload randomly named files with post, spamming out from random users on the box. Examples <?php if ...
0
votes
0answers
32 views

Switched google apps domains; now certain emails aren't delivered?

We recently moved from one google apps domain to another, and used Backupify to transfer email accounts, etc. Since then, we've had intermittent issues with customers not receiving emails or having ...
0
votes
0answers
149 views

Applying exim ACL to mail from backup server

I use exim as a mail server. To combat spam, I have a catch-all email address, and use a custom email address for every service I sign up to. If they leak my address to a spam list, I can just block ...
0
votes
0answers
37 views

On multiple spamming-blacklists after desinfecting network computers

We are currently listed on a couple of spam-blacklists since last week. I have taken the following approach to prevent this from reoccurring: scan every (windows)-device in the building using ...
0
votes
0answers
232 views

Server is being used to send spam email via sendmail

When I run sudo tail -f /var/log/mail.log I can see a number of 'live' entries appearing such as Jun 6 00:40:03 ks393391 sm-msp-queue[2641]: r55MV0l1001642: to=ledbpw@gmail.com, ctladdr=www-data ...
0
votes
0answers
112 views

Return-Path showing spam coming from my domain?

So I just logged into an old email address to see a ton of similar messages like the one below: To: "oliver@example.com" <oliver@example.com> Content-Transfer-Encoding: 7bit Mime-Version: 1.0 ...
0
votes
0answers
489 views

Postfix server begins send spam immediately after starting

I've installed a postfix server on a debian os & also I've installed apache 2.0 with php on same machine Several days ago my server begun to send a lot of spam messages via postfix. I understood ...
0
votes
0answers
278 views

EXIM4 sent mail sometimes rejected, always put in spam. DKIM and SPF pass + reverse DNS

Recently I've been seeing some instances of Your access to this mail system has been rejected due to the sending MTA's poor reputation. in my maillog and have noticed that my emails have been getting ...
0
votes
0answers
348 views

UID 33 sending SPAM

Please help! On sunday I started receiving a lot of email bounces which I investigated right away and saw someone who hadn't logged in seemed to be using vbulletin's sendmessage.php to send SPAM as ...
0
votes
0answers
91 views

The email sent from my server are marked as spam

I have a dedicated server at OVH. For several days I've noticed I'm in a spam list (spamcannibal). The reason I said was for generic PTR. I've changed and I have commanded to remove from the list. ...
-1
votes
0answers
18 views

POSTFIX How can I block spam with spoofed header that appear to be sent from the recipient's mail address?

I am managing a mail server with some domains on it, I am running postfix and courier on Debian. I am blocking spam by adding rules to the postfix header_checks, but, some domains are receiving spam ...