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

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616 views

Recommendations needed on building an outbound relay spam filter

I've got a handful of Plesk machines of various versions and operating systems, each hosting mail as well as web sites. Anyone who has dealt with Plesk knows that it can be pain to keep locked down. ...
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2answers
1k views

Spam relaying through my mail server?

Would anyone mind having a quick look at the header below to help me identify if our mail server is acting as a relay for spam (or something else)? It was received by an RBL a few days ago, and its ...
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1answer
105 views

Are you able to filter outgoing NDRs based on Header in Microsoft Exchange?

I administrate an email system for a commercial ISP. I'm currently having an issue with one of our customers relaying outbound SMTP traffic from their Exchange system through ours, and they're ...
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2answers
407 views

Mdaemon v6.8.5 and Postini delivery problems

I've run into a problem when my mdaemon server sends email to a domain whose MX are at Postini. After receiving a single 451 because 451 Recipients not all at same mail host - psmtp a message that ...
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1answer
631 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 ...
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1answer
888 views

How to stop backscatter email spam

I know I can't do anything about people spoofing my email address, but what can I do about all those annoying bounce-mails? I get 5-10 "Undeliverable mail" a day, but I don't know how I can filter ...
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6answers
6k views

how to track down a spamming script?

My server sent 83,000 spam emails last night, I've been trying to track down the culprit, but I'm not sure how to find out exactly. in the logs the "from" address is always something like @#! the ...
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2answers
503 views

Blocking sender domain from maillog

In our mail server we are taking lots of hits. In the maillog there are lots of these: Apr 23 04:35:13 mail1 postfix/smtpd[31700]: NOQUEUE: reject: RCPT from unknown[119.153.14.231]: 554 ...
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3answers
164 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, ...
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6answers
207 views

Does disallowing sending emails via a SMTP server that doesn´t have the same address help preventing spam or is it dangerous?

I am working in a small programming company and administrated the mail-servers for quite a while. Now we moved our web site and the MTA to a company that we considered to be more professional. But I ...
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1answer
773 views

Multipart messages from postfix go to spam in gmail/hotmail

I'm new here and I'm sure this question has been thrown around a lot but I just couldn't find a solution. I have a networking website I've setup and we need to send notification mails to our members ...
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5answers
851 views

How to notify Gmail, Hotmail, etc. that you are a legitimate website sending lots of notification to users

Although I have already done everything, like adding SFP, DKIM and sending plain text in my emails, I want to notify Gmail, Hotmail, Yahoo, and other "big" popular email providers that I'm legitimate. ...
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1answer
53 views

Suspected Spam Issue

Recently I've got problem from sending email out, it's about relaying denied. After doing some checking I found that my ip is being blacklisted, because of spamming. I checked my maillog and I found ...
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2answers
314 views

Filter messages in Mailscanner based on 'From:' header

I created a blacklist rule to filter out messages: From: *@job.com yes It works, partly, except that part of those messages are sent with a return-path other than job.com. I Googled a bit and ...
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2answers
282 views

DNSBLs for IPv6

Spamhaus and other well-known DNSBLs don't yet support IPv6, and I'm not sure they ever will. What alternatives are there for spam filtering on IPv6? One approach is to rely entirely on ...
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2answers
123 views

Track messages marked as spam and remove them from my mailing list

Is there a way to know when a message which our mailserver sent out is reported as spam? I'd like to know, so I can remove them from our distribution list.
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2answers
1k views

My server is sending spam

I have a dedicated server with CentOS+MySQL installed from godaddy.com. Recently I had some very weird problems: I installed a PHP application which has a thread that queries a MySQL database for ...
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2answers
343 views

My system generated emails[from php script] are going to spam folder in yahoo and hotmail

We have an application running on biggerrole.com domain. We have hosted it on Hostgator VPS. The application sends transactional emails to our registered users. Currently the emails go to spam folder ...
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2answers
1k views

Stopping spam-related bounced emails

One of my e-mail customers is currently on the receiving end of massive amounts of delivery failure notices as a "Nigerian scammer" seems to be using her address as its MAIL FROM field. A lot of it ...
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2answers
169 views

How do i know email sending limit not to be declared as spammer?

I need to implement in our CRM the mass email sending from our customers to their contacts. I am sorry this might be trivial question, but i maybe dont know what keywords to use to google it, how do i ...
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2answers
240 views

My dedicated ip address is blacklist for spam email sending

My question is that How can I know that which client's computer is infected? so that I can block him. I am running more than 300 websites on that server. that is really ruining the business. Could ...
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7answers
16k views

How to stop spammers from sending spam as me

We've starting to receive bounced spam messages and the sender is one of our email address. We know that we don't send spam from that address. We've tried changing the password but we're still ...
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1answer
678 views

Preventing Postfix backscattering

I am having problems with the Postfix mail server being used for backscattering, I have tried the suggestions in the manual but nothing seems to work. Does anyone know how we can reject any mail from ...
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1answer
270 views

Debian Server with Postfix and Dovecot + Spam Management

I currently have an email account that receives TONS of spam because currently I have no filter setup. Is there any way of going through that spam that I am receiving and setup a filter off those ...
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1answer
977 views

Sending mail through local MTA while domain MX records point to Google Apps

My domain's email is managed by Google Apps, so that domain users get Gmail and Calendar, etc. But I also want to be able to send applicative notifications to users outside the domain via email (e.g. ...
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5answers
2k 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 ...
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3answers
472 views

Blackberry sending mail problem

Hey all got a pretty simple question here: [A LITTLE BACKGROUND] We use a service called Google Postini and part of Postini is a service called IP-Lock. What IP-Lock does is if an individual ...
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2answers
487 views

spamassassin with sendmail: spamass-milter or spampd?

I want to integrate my sendmail MTA (relaying only, no local mailboxes) with spamassassin. Sendmail box sits between internal MS Exchange server and internet. So, I see two options for doing this (or ...
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3answers
396 views

sendmail rules for filtering spam

Can anyone help me with constructing sendmail rules for limiting spam? Assuming that name of my domain is my.domain.com, I want to use following rules: If BOTH sender and recipient address is from ...
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1answer
359 views

How to solve the problem RCVD_BY_IP “Received by mail server with no name”

I'm using MailingCheck to calculate the spam score of my e-mail messages. There is one problem bugging me that i don't know how to solve. RCVD_BY_IP "Received by mail server with no name" It ...
0
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2answers
163 views

Filtering semi-solicited spam

While traditional UCE (get rich quick, enlarge your body parts, Nigerian barristers) are handled adequately, I'm still receiving a lot of not quite unsolicited spam. This is typically from commercial ...
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1answer
117 views

Managing an email server - what steps can I take to ensure our emails are delivered

We have developed some CRM software which allows the users (our clients) to send emails to their clients (both individually and as a bulk email-out). The emails are sent via our email server, but ...
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1answer
1k views

How can Monitor Linux zimbra mail traffic ( in and cout )?

I configured zimbra mail server in linux. Is there any way to monitor e-mail traffic through linux server. Or any way to monitor spam activities on this zimbra mail server. Thanks for the great help. ...
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2answers
306 views

My exchange 2003 mail server is blocked by RBL lists. Someone is sending spam from inform@mydomain.com

All outgoing email to external recipients from my Exchange 2003 server is getting blocked by RBL lists. I'm new to administrating Exchange and i checked the Message Tracking Center under System ...
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2answers
12k 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 ...
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1answer
317 views

Stop OpenVPN client sending spam

I have openvpn configured on the centos server and client can connect via openvpn client from there windows box on port 1194. Clients gets the gateway 10.0.8.1. The problem is that client boxes have ...
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1answer
91 views

How do I set up an email server that automatically maintains a list of previous recipients?

I want to set up an email server with the following characteristics. What software (besides bogofilter and clamav that I'm naming) should I use and what HOWTOs should I read? The server should run ...
2
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1answer
2k views

Email sent using hMailserver goes to spam

I have configured hMailserver to send and receive email. It is working fine but all the mails send to any id goes to spam. reverse ptr for my domain is ponting to my static ip. mx-record is pointed ...
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2answers
67 views

Emails sent through our application are going to spam or not comming at all

When sending emails through our rails app they are going to spam in some email accounts(hotmail) and not coming at all in others. We are using sendmail to send the emails. The sender email id is ...
0
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1answer
518 views

Why are my emails being marked as junk?

I've configured SPF, reverse DNS and as far as I can tell I'm not on on RBL. I've attached a sample data below. I do not send unsolicited emails X-Message-Delivery: ...
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1answer
241 views

What is the aim of this email? Is this a ping or sping or what? [closed]

I asked this on Webmasters, since it was related to me being webmaster, but it got closed as off-topic. Let's see if I get lucky here. I received this spam in my catch-all. As a webmaster of the ...
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3answers
3k views

Prevent mail being marked as spam

This is a canonical question about avoiding outgoing mail being classified as spam. Also related: Fighting Spam - What can I do as an: Email Administrator, Domain Owner, or User? What ...
2
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3answers
800 views

Force Apache2.2 to drop a request

Long story short we recently had an account on one of a shared hosts compromised, the issue has been resolved but the affected account is still being spammed with over a million requests a day to a ...
6
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1answer
555 views

Avoid creating backscatter on a Postfix forwarding server

I run a Postfix server that hosts a small, alias-based mailing list. Let's say people@myserver forwards to alice@someprovider and bob@someotherprovider. Now, alice@someprovider might use a more ...
0
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1answer
331 views

Best Email Host or Solution For Large Volume of Automated Emails

I run a service which send's people alerts via email. I am launching a new version and switched over a bunch of stuff to GoDaddy, but it looks like there is a limit of 250 SMTP relays per day so this ...
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1answer
593 views

New Job Offers Spam - Defeats SpamAssassin

For the last month or so I've noticed a shift in spam content. Basically still getting a lot of it but there's a new focus on fake jobs offers. They all look the same, all take to a fake Seek.com ...
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1answer
99 views

Temporary E-mail Addresses in Business

I'm a big fan of services like mailnull which allow users to give a temporary e-mail address to prevent spam. I'd like to give something like this to my users. Does anyone know of any solutions ...
4
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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 ...
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2answers
453 views

Email been marked as spam

Friends, I tried a lot of changes, but no success to send the email correctly formated, I'm using the same domain to send mail and the email pass trough spf and authentication, but has been marked as ...
0
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1answer
101 views

Published and updated mass email statistics?

I'm wondering if someone is publishing statistics on email usage on the internet. The main number I'm looking for is average message size on a large scale sample data over time. If someone doing ...