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

learn more… | top users | synonyms

0
votes
1answer
37 views

Blocking spam with SpamAssassin [duplicate]

I have a server that runs websites and exim for e-mail. I've added countless RBLs including barracuda to try and cut back on incoming spam. However, they still keep coming in. The clients use ...
1
vote
1answer
101 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 ...
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 ...
-2
votes
2answers
76 views

Emails from my domain getting blocked at all other domains [duplicate]

Recently I tried to set up a new email server using iRedMail on Lubuntu. The mail server workes very well when email conversation is in the same domain. But when a user tries to send email to some ...
0
votes
0answers
31 views

Server exploited, perl script sending spam [duplicate]

my server with centos 6 is sending massive spam. Before move the backup on the new clean server, I must understand what is going on. let's read some logs mail log Jan 10 14:21:00 vps63495 ...
2
votes
2answers
81 views

Block people searching for server admin pages

Occasionally I flip through our (apache) access log and I often come across people trying to fish for admin pages. For example, they are trying to access pages like: /wp-login.php ...
3
votes
1answer
119 views

Why am I getting these emails?

Awhile ago I noticed that email messages from my domain is not immediately delivers by google, and I'm getting an smtp error message from google server. I don not remember the exact wording of that ...
0
votes
0answers
12 views

Blacklist mail server [duplicate]

I have checked my IP in all spam lookup sites. those sites are DNSBL.info, spamhaus.org, barracudacentral.org, spamcop.net, blacklistalert.org and all of it says that I am clear. But when I checked it ...
-3
votes
4answers
1k views

Remove blacklist from spamRATS

I have checked my IP in SpamRATS and the result is the following: Standards Compliance: Does IP Address resolve to a reverse hostname... Passed! Does IP Address comply with reverse hostname ...
-2
votes
1answer
43 views

Individual accounts being spammed on server, even though DNS not hosted [closed]

Disclaimer: Please pardon the newbery! I've got a dedicated linux server from HostGator that has around 100 accounts on it. Lately, dozens of these accounts get bombarded with junk mail a few times a ...
-1
votes
2answers
145 views

Postfix, I'm receiving a lot of undelivered mails (logs inside)

Some days I receive a lot of Undelivered emails, it's like my server is used as relay. But I don't know if that's only backscatter emails or my server is really used as a relay. Here is what I found ...
1
vote
2answers
1k views

AOL bounces with: AOL will not accept delivery of this message [closed]

AOL started bouncing emails from my mail server with the following error: 521 5.2.1 : AOL will not accept delivery of this message. 554 5.5.0 Remote protocol error On the troubleshooting page AOL ...
0
votes
0answers
10 views

getting lots of spam from “unknown” and helo localhost [duplicate]

On our server, we keep receiving spam with the following headers. We are using whm 11.44 and exim. Return path is always: Return-path: <> and it says Received: from unknown (HELO localhost) Both ...
1
vote
2answers
91 views

My site is suddenly getting slammed, not legitimate traffic

I run a site with about 700 registered users. On a typical day, there are 30-50 hits. In the last three days, the traffic has increased insanely fast (according to Google Analytics). I got 7,287 hits ...
0
votes
2answers
379 views

Postfix 2.9 or sendmail, outgoing spam prevention (check if sender exists)

Operating System: Linux Ubuntu 12.04 TLS Context: Plesk 11.5 Utility: Postfix 2.9.6 (updates restricted by Plesk 11.5 distribution) I would like Postfix to check the 'sender' field of every ...
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: ...
3
votes
1answer
181 views

Configure Barracuda Spam Filter behind Postfix to use client IP when do RBL-checking

I have the following setup: Internet -> Postfix Mail setup as Proxy -> Barracuda Spam Filter -> Microsoft Exchange I have tried searching through the documentation and configuration panels to see ...
-2
votes
1answer
97 views

How can I avoid being classified as spammer when I forward mail to a gmail account? [duplicate]

Update: The link pointed to by the "duplicate" initially didn't seem like the same problem to me, because the post talked about blacklisted "domains" not blacklisted "IP addresses." However the main ...
0
votes
1answer
51 views

Spam Firewall for Exchange 2013 Environment

We are currently using Exchange 2013 and we are interested in the Barracuda Spam Firewall. We are trying to figure out a way around our current email flow setup. We currently have multiple users with ...
1
vote
1answer
286 views

Postfix mail sent to SPAM in Yahoo and Outlook (SPF, DKIM, DMARC also configured)

I have implemented DMARC in out email server and got the response from some of the email domains as follows, <?xml version="1.0"?> <feedback> <report_metadata> ...
3
votes
1answer
59 views

How to deploy separate DNS server for email filtering

I'm looking to install Vamsoft ORF as a spam filter for my domain. Looking at the Deployment Guide I've noted the following statements regarding DNS. The server should not be the same DNS server ...
1
vote
1answer
106 views

Postfix: For a certain address, only allow emails from a certain domain

I've set up my server so that, in order to track down the source of spam (and block it), the email address that I use to sign up for stuff is service_name@example.com (e.g. for Facebook, it would be ...
0
votes
2answers
40 views

Make exim accept mails to be redirected only when they can be sent

I run a small mail server with all the usual functionality: Sending of local mail, receiving mail for local folders, redirecting mail according to alias and a mailing lists. The redirections go to ...
0
votes
0answers
15 views

Virus sends mails via sendmail [duplicate]

I noticed that my server has some bad software that sends mails via sendmail which couses a very slow working. I scaned server with clamscan but without effect. Is there any way to find out which ...
2
votes
1answer
79 views

Office 365 - Exchange Online - any way to block false URL spam?

I've already asked this with Office 365 support but unfortunately I didn't really get anywhere this time due to the language barrier. They tried to tell me how to block it with a check box on the ...
0
votes
1answer
29 views

No-Listing policy with postfix (ubuntu)

I'm running an experiment on a virtual machine. In the virtual machine I've installed ubuntu and Postfix as a mail server. I followed the guide: https://help.ubuntu.com/community/Postfix , only the ...
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 ...
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
1answer
359 views

Getting lots of traffic from russia to an unpublished site

I am currently building a website. Currently nobody knows about it but it is already reachable for testing purposes. Now I saw, that I get a lot of traffic from russia (Its a german website hosted on ...
2
votes
2answers
225 views

Postfix & Amavis - Use UNIX Soket for Communication

I currently using a complex mailserver setup using Postfix, Dovecot, Amavis and Spamassassin. Everything works fine but I want to improve the Postfix-Amavis-Communication. At the moment, postfix will ...
1
vote
1answer
80 views

Block sender after sending to n non-existent email addresses

I have a domain that I use for my email. There are a couple of actual email addresses there, and everything else goes to a catchall. I use the catchall so I can create email addresses on-the-fly, like ...
-3
votes
1answer
74 views

Exchange 2013 Spam / Junk Email

We have an Exchange 2013 installation ready to go live in our organization. Due to budget restraints, our spam solution will be added in 3-6 months. We are going to use the built-in Anti-spam and ...
0
votes
2answers
120 views

Emails never arrive at recipient but spam tests show no problems

I am running a WHMCS hosting system for a small number of private clients. For a few of them they never seem to receive the invoice emails I send out. I have ran the emails through a number of tests ...
0
votes
1answer
118 views

Apache2 Mod_spamhaus Whitelist

We are using Apache2 mod_spamhaus and many customers were banned using the "Post" method. There is no way to deny mod_spamhaus ban continuously our customers making false positive or ban customers ...
2
votes
1answer
120 views

SPF issue with SpamAssassin

I have an internal management app for a small company, written in Python and running on a Linode VPS, with which users can send occasional emails to their customers. The emails are quite ...
0
votes
1answer
31 views

Sending bulk / single emails from a single domain [duplicate]

Let me explain our situation: We have a web application that uses subdomains for each customer instance: customer1.example.com customer2.example.com Every instance can have over 500 users, which ...
0
votes
1answer
65 views

moving emails on cPanel or plesk to specific folder based on tag [closed]

I have hosting servers with cPanel and Plesk, which have more than 1000 customers. I want that when any email is marked as spam, then it should be moved automatically to JUNK folder, instead of ...
0
votes
1answer
71 views

Exchange SMTP authentication issue with spammers

I have a single Exchange 2013 server with all the roles and it looks like it's being used by a botnet. It is sending mails every 10 minutes to a specific domain from a specific user. It is not an ...
16
votes
3answers
2k views

Is my new gTLD causing it to get filtered as spam?

I have a domain called "*******.international". I decided to go with the new gTLD because it fits the name of the company pretty well. I have an automated emailer setup to send emails to our clients' ...
0
votes
1answer
84 views

Prevent Email Going to Spam [duplicate]

I've set up my own server and I'm really struggling to stop any outgoing email go to spam. I've used allaboutspam and mail-tester.com to test it and they both come back with perfect results. No ...
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 ...
0
votes
1answer
275 views

How to configure SPF and DKIM to prevent mail going to spam folder

When creating a mail with PHPMailer my emails are getting sent to the spam folder of my recipients mailbox I have been told I need to configure my SPF and DKIM correctly, I think I have done this ...
1
vote
2answers
55 views

Bouncing email due to bad initial MX TTL?

Last Friday night we changed mail servers. We moved off Office 365 to another hosted Exchange Solution (Intermedia.net). We use Godaddy for DNS, and after the server migration stuff was ready and ...
-1
votes
1answer
1k views

How to stop server sending spam out. Centos server with exim [duplicate]

I'm looking at a server that appears to have been compromised via a bug in a wordpress plugin and is now sending spam out. This post seems to give a very good report of exactly what I'm seeing. ...
-1
votes
1answer
106 views

What Does 'HELO_LH_HOME' Means In Spamassassin's result?

I'm trying to send emails from PHPMailer using php on my IIS server. But My emails are going to spam, So I've used spamassasin to detect what is wrong? and here is the result: pts rule name ...
1
vote
1answer
154 views

Outgoing Spam through hacked Mail Accounts

Already searched some Hours about this Problem - but no good Solution in sight - so maybe someone here can help me on this. We offer Webhosting / Mail Services. Lately the amount of Hacked E-Mail ...
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 ...
1
vote
2answers
265 views

Is my Postfix sending spam?

In my Rsys log I am getting weird email requests that are not initiated by my server: Nov 17 09:32:18 localhost postfix/qmgr[21748]: 8E52272C09: from=<>, size=33770, nrcpt=1 (queue active) Nov ...
2
votes
1answer
50 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 ...
3
votes
3answers
301 views

Postfix and compromised accounts

First of all, sorry for my English. I think it's very common to set the permit_mynetworks and permit_sasl_authenticated restrictions on first positions of the smtpd_recipient_restriction list, but, ...