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
224 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
410 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 ...
2
votes
1answer
32 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 ...
2
votes
1answer
66 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 ...
2
votes
1answer
5k 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 ...
1
vote
1answer
100 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 ...
1
vote
1answer
81 views

How to send a custom reject notification in Qmail (badmailfrom File)?

i´m using QMail and i want to reject various emailadresses (domains). I found the following way: Block Email Senders in QMail: /var/qmail/control/badmailfrom When i block a sender he will get the ...
1
vote
1answer
2k views

Exchange 2010 email spoofing prevention

Masters, Unfortunately we got some spam mail which seems to be coming from our own domain. I found some article which all says to remove Anonymous login from internet receive connector ...
2
votes
0answers
68 views

Exchange 2013: content filtering bypass

I have just completed a migration from a single Exchange 2007 to 2xExchange 2013 servers in separate sites. Mailflow is working correctly, but the anti-spam content filtering is not working as ...
2
votes
0answers
108 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
221 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
21 views

SFP + Gmail = Emails delivered to spam box

A long time ago I posted a question here: Postfix: Gmail marking my email as spam where I said that although emails send from my servers were passing all the DKIM and SPF tests they were getting ...
1
vote
0answers
10 views

Can mailman/exim reject nonmember postings at connection time?

I am using Mailman with Exim. When a nonmember posts to a mailing list, Mailman can be configured in any of the following ways, each of which has a problem: Accept it -- this distributes spam to ...
1
vote
0answers
44 views

Automatically rescan email with SpamAssassin after it has been received

For the past months, the amount of spam I've been receiving has been driving me crazy. Despite running SpamAssassin (with RBL checks) on my Exim4 mailserver, a lot of it has been finding its way to ...
1
vote
0answers
23 views

Exchange 2010 still sending NDRs even when disabled

We have 2 Exchange 2010 SP3 Rollup 7 Servers in our organisation. 1 server receives all external SMTP mail. Both servers have AVG Email Server Edition installed and operational. I have disabled ...
1
vote
0answers
146 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
308 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 ...
1
vote
0answers
83 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
1k views

How can I test if my apache server is an open proxy?

Is there a curl command that will validate if a server is acting as an open proxy? I've tried curl --proxy http://<my server>:80 http://yahoo.com But the response from apache is: ...
1
vote
0answers
339 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
447 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
238 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
79 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
41 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
13 views

just postfix config error or did I get hacked?

A few hours ago I noticed that my server is sending more mails than usual, I thought it was through a compromised account, so I changed the password of the account in question but the spam didn't ...
0
votes
0answers
19 views

exim queue notification if a domain is sending more than x number of emails

I am running Exim as an MTA. I have also implemented a Per hour Per domain email Limit. Still I see that my IP reputation goes bad if a spammer sends more than x amount of emails in 24 hours or so. I ...
0
votes
0answers
23 views

Does having the IP for a naked domain on a blacklist affect spam filtering if that IP isn't used for email?

Let's say I have a domain used to host a website, example.com. Email is handled exclusively via Office 365 with all the recommended settings. When I use MX Toolbox's blacklist search and search for ...
0
votes
0answers
26 views

b.barracudacentral.org how configure my firewall

I use a ZyXEL USG200 firewall and I have to put in it the b.barracudacentral.org URL to activate the check of incoming mail. I use an external ISP DNS server and an external hosted email service, both ...
0
votes
0answers
22 views

Lotus Domino how to Enable Verify connecting hostname in DNS but with exception

Hi I enabled @ LOtus Domino the Configuration -> Message Settings -> SMTP Inbound Controls Verify connecting hostname in DNS This blocks all messages incoming if the sender IP has no reverse dns. ...
0
votes
0answers
30 views

How do I stop spam sent to mailing list posters by a list subscriber?

I administer a few moderate traffic mailing lists. I'm starting to get reports from list members about spam being sent to them after they post to a list. I've been sent a couple of these spam messages ...
0
votes
0answers
19 views

Prevent Hmail from relaying spam

I am running hmail and it is sending a lot of spam without my knowledge and without me making it send anything. This is highly frustrating. What must I configure in Hmail to prevent it from ...
0
votes
0answers
21 views

Scraping log to identify emails sent to another MTA

I have a Courier MTA that seems to be sending spam. I want to scrape courier's mail.log to identify, for each mail that was sent to another MTA: The from address Where Courier got the email from ...
0
votes
0answers
20 views

SCL not available for single user

Recently migrated from Exchange 2003 to Exchange 2010 with Edge server. Problem is: All incoming mail for one specific user bypassing Mail Content Agent checks, there is a record from logs: ...
0
votes
0answers
46 views

Centos Qmail Detect source of internal spam

Our server seems to be spamming various other sites on the same server. I have tried various tips provided on this site and others to locate the source. At the moment, I have a script adding a line to ...
0
votes
0answers
53 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
455 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
140 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
29 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
61 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
63 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
738 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
1k 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
76 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
48 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
62 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
45 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
164 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
39 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
325 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 ...
-2
votes
0answers
16 views

configure sendmail to discard inbound mail sent in error

Management has asked that I set up a sendmail rule to not respond to internet mail sent in error. I think this can be done through ruleset hooks, where an address resolving to $#error can be routed ...