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

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-1
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0answers
19 views

Google mark my mail from my Sendmail on VPS as spam [duplicate]

I would like to ask you to check my message headers. I'm sending it from CakePHP mail library (it's mail() indeed). I just configure SPF and many email servers (for example yahoo.com and many polish) ...
2
votes
1answer
33 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
16 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
14 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
23 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
15 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
14 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
3answers
42 views

How to allow PHP to send email only if the FROM address is an existing email account on the server

I have a VPS server. on a previous shared server I remember that PHP would only send mail if the FROM address exists on the server as an email account. I need to know how to limit PHP from sending ...
0
votes
0answers
12 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
78 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 ...
1
vote
2answers
51 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
40 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
44 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
51 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 ...
2
votes
1answer
62 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
21 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
31 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
51 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 ...
15
votes
3answers
1k 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
57 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
votes
1answer
197 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
39 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
64 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
35 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
150 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
39 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
168 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, ...
0
votes
1answer
52 views

Lot spam from unknown source

Here is the email header and info that I got from aol abuse. This type of emails are being generated from my server randomly at a very low rate and IP is blacklisted very freuqently. After 2 weeks of ...
0
votes
1answer
121 views

My server is sending out emails with spoofed accounts

I have a windows 2008 R2 server. I am using mailenable proffessional version 7.59. I noticed on MTA logs that random (non-existing) mail accounts are sending spam email. The emails are from a NULL ...
15
votes
2answers
976 views

What are the best methods for catching snowshoe spam?

I'm using Smartermail for my small mailserver. We've been having a problem lately of getting waves of snowshoe spam that follow the same pattern. They come in batches of 3 or 4 at a time. The ...
-4
votes
1answer
56 views

Mail is marked as spam by gmail - no idea, why [duplicate]

I'm using my DSL-Business-connection for a small office. I just installed a Mac Mini Server with mail-support and try to send an email to googlemmil, but this mail is getting marked as spam. This is ...
0
votes
0answers
20 views

only email from my own server to google apps on the same server end up in spam [duplicate]

Im sending emails from a webshop on my VPS. The emails land nicely in the inbox everywhere, including gmail accounts, EXCEPT for the emails to the owner of the webshop, who has google apps email on ...
0
votes
1answer
76 views

How to prevent spam from “as permitted sender” senders?

Looking into my gmail spam folder, I see many messages coming from an old domain. How does it work, that I receive spam from an old account? And, how can I stop these spammers of using the old email ...
0
votes
2answers
63 views

Tracing down spam

How can I find the source of out going spam on a linux server? tail -f /var/log/exim_mainlog 2014-10-24 15:02:37 [28750] 1Xhl4A-0007Te-9C Completed QT=7s 2014-10-24 15:02:37 [28746] SMTP ...
0
votes
2answers
97 views

How to check whether my server turned into a spamming machine?

I am suspecting something is sending a plenty of mails from my server without my knowledge. I'd like to check whether my machine turned into a spamming server. What is the easiest way to do this? ...
-1
votes
1answer
54 views

Too many sendmail instances in “top” command

I got a server with mysql+php running on it only. Cronned PHP scripts (not available publicly) send occasionally emails, but not more than 10 per hour. However, whenever I type "top" in bash I see ...
0
votes
1answer
57 views

Parked domains on Spamhaus DBL

I've set up a nameserver to park a bunch of my domains (similiar to sedo, bodis etc). Everything is working well. Unfortunately, all my parked domains are instantly listed at spamhaus (DBL). No mail ...
3
votes
2answers
140 views

Postfix - forward rejected by unknown recepients emails to SPAM-learning mailbox

I have Postfix + BitDefender FRAMS running as hygiene gateway before few Exchanges. BD FRAMS can learn it's Baesian filter by download SPAM and HAM emails from dedicated mailboxes. Because we have ...
2
votes
1answer
45 views

Simple command line plain text spam or ham classifier

I have a load of database entries that have been saved that are full of spam. I would like to be able to pipe the text output of each into a spamassassin or similar tool to be able to get a score on ...
0
votes
1answer
714 views

Postfix - receiving many “Undelivered Mail Returned to Sender”

I once set up my server using this guide (or a very similar one) But from time to time I have days or weeks of flooding "Undelivered Mail Returned to Sender" to my inbox. Oh and I am using catch-all ...
5
votes
2answers
581 views

Will blocking port 25 on a router cripple outlook clients?

I work at a small ISP, we manage about 60 buildings with p2p radios and a main cisco router at a central location. Recently we were notified that a phishing domain is associated with one of our IPs. ...
0
votes
1answer
125 views

How do I stop SPAM from being sent from my server? [duplicate]

I have a VPS which I rent and it is running Centos 6. The VPS has ZPanel installed which is used to host some websites and emails. One of my clients has noticed thousands of 'undeliverable' messages ...
0
votes
1answer
55 views

How many bounces before removing a dead address to avoid recycled spam trap?

We are developing our own mailing tool and scan log and mail error to remove dead mails from our database. When an error 5xx is returned by mails servers, we remove the mail for a determined time ...
2
votes
2answers
94 views

Mail not delivered from custom email server (MS Exchange)

I have my own Exchange Server 2013 (SP1). I am able to receive emails ok but sending emails is not reliable. Emails sent to gmail or seznam.cz (email provider in Czech Republic) is ok. The problem is ...
0
votes
0answers
174 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
1answer
37 views

Forwarding spam from gmail to email gateway for anti-spam testing

Is it possible to forward all emails that end up in my gmail spam folder to another email address? We're standing up a new anti-spam email gateway and need to generate some real email for testing ...
0
votes
1answer
38 views

Which E-Mail software generates these spammy mails?

I notice a lot of spammy looking e-mails from suspicious sources. They are not real spam but are unsolicited. You can identify them by containing these headers: X-Mailer-LID: 5 List-Unsubscribe: ...
6
votes
2answers
389 views

Office 365 - what is in the “Sensitive Word List” for spam filtering?

In Office 365 you can toggle a few settings to help with spam email filtering. Among these is a setting to enable a "Sensitive Word List" as shown below: The problem is...I can't find any list on ...
-1
votes
1answer
56 views

Exchange Server Spam Protection [closed]

I took over an exchange 2010 server on what I believe is a Hyper V Virtual Machine, running Windows Server 2008. We have a SonicWALL firewall, but the majority of the licensing on the firewall is no ...
0
votes
1answer
120 views

SpamAssassin filtering by Exim 4 with virtual user preferences

I would like to configure spam filtering with exim's built-in spam filter support in acl_check_data config section. The piping, exim header modification (to store result) works well. As well as ...