Generally refers to techniques that aid in avoiding receiving any email or message that is either unwanted or unsolicited.

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0answers
24 views

What is causing Unresolved IP Address [on hold]

I am just wondering what is causing the Unresolved IP Address, because most of my traffic came from this IP address. My website was forcefully shut down, and they told me "Reviewing the issue there ...
0
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3answers
34 views

Why do spammers not spoof the sender address as an email likely to be already whitelisted or trusted? [closed]

I realize that if they spoofed from @google.com and it's sent to a gmail address, it will show as spoofed. Wouldn't showing images aid them in proving that someone read the email? Or do spammers not ...
0
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0answers
14 views

How can I filter spam based on the return path in an email with clamav/amavis/spamassassin/postfix

I run an Ubuntu 12.04 server that hosts a few sites and has a handful of mail users. For email, I am using postfix/dovecot with clamav/amavis/spamassassin for anti-spam/virus. This works pretty well ...
0
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0answers
51 views

Emails from my domain treated as spam by Gmail and Outlook

I know that this question asked multiple times before but I have a little bit different situation. In Brief: I have reverse DNS, PTR records, SPF records, DKIM 1024-bit key, IP not blacklisted, ...
-1
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2answers
39 views

Spam detected by content scanner [duplicate]

I was writing to a friend of mine, back and forth, and suddenly I am getting the following message back: <email@example.com>: host mx1.example.com[123.123.123.123] said: 554 5.7.1 Spam ...
16
votes
1answer
1k views

How Is It Possible To Send Email Under Our Domain Name

Spammers or someone is sending emails using our domain. The emails are from a user we didn't create called regeniaberry67a@ourdomain.com.au. The email is to regeniaberry@ubtanet.com. The ...
1
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1answer
14 views

Strange spam not appearing in any gmail web interface folder (including spam folder) but appears in inbox when reading email via imap

I received the following spam (I included the header) when reading my email by alpine email client. Strangely this email does not appear in any gmail web interface folders (including spam folder). ...
3
votes
0answers
62 views

Banned for reporting a site email as spam [closed]

I was banned from a website supposedly for reporting their emails as spam to Outlook. I'm wondering how they figured out I added them to the spam folder? Isn't that secret info? This is the full ...
0
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0answers
13 views

Outlook 2010, combine junk filters for separate inboxes?

Outlook 2010 appears to have an issue where it has a separate junk filter for separate inboxes. This doesn't work for my boss, and manually copying them over once a week sounds like a gigantic pain. I ...
0
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0answers
286 views

how to block spam email by subject in zimbra

How to block spam email by subject, I did try this step as well, but doesn't works. It uses custom_header_checks and define some parameters, I did try such parameters and restart the services but it ...
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votes
1answer
31 views

Reporting a spam [closed]

I believe I was hacked last night. The worst thing is whoever did this has now changed my password and I can no longer access my main email account since this morning. I am petrified to know someone ...
0
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0answers
21 views

Delete “JUNK” email folder from Outlook

I have two junk email folders in Outlook. Can I delete one of them or are they both in the coding and not delectable?
0
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0answers
28 views

Incoming email returned to sender by a spam bocker called Kundenserver

Many incoming emails are sent back to sender. How can I unblock some of them? The subject line is 'mail delivery failed. Returning message to sender.'
-1
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2answers
137 views

How to prevent hacked emails from sending out spam

I am new to this whole server admin thing ... I work for a small company, in which I am the web developer & server admin (a job I was thrown into). Please note, before taking this job I did not ...
0
votes
1answer
80 views

How to use spam filtering on a VPS with only mail forwarding (aliases)?

I have a VPS set up as MX for several of my domains. The e-mail for these domains are just aliases to other mail accounts (mostly Gmail) to forward incoming mail. Ofcourse this catches also much spam ...
0
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0answers
82 views

Detect spambot on ubuntu 12 TLS

Recently I discovered in my mail log that there is an enormous amount of spam being sent from my home server. I am running no websites, just zpanel. I closed down all the ports and am monitoring the ...
0
votes
1answer
32 views

Spam filter in Outlook 2010

Recently the one sender who I receive from most has been blocked. The messages do not appear in Junk or Junk E-mail folders, but show up if I search All Mail Items as being in a Spam folder. I can ...
0
votes
1answer
51 views

Strange emails in postfix queue

Currently I am not sending any emails, I have postfix and dovecot installed but in the in the postfix mail queue I see strange emails almost every minute, i dont know from where is this spam ...
0
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1answer
183 views

Why does Gmail mark some messages read and some unread in my Spam folder?

I use Gmail which has tremendous spam filtering capabilities. But, I'm curious why some messages are marked read vs. some left unread in the Spam label folder. Of my 1,000 current messages in Spam, ...
1
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1answer
82 views

What is the most effective way to blacklist a domain?

I have a domain name that is being used as the "from" address in millions of spam messages. I get over 10,000 NDRs every day! The original messages aren't coming from my machine, the spammers are ...
0
votes
0answers
55 views

Local SMTP Server — prevent spam flag?

I opened up port 25 on my router, so now I can use sendmail to send email. However, the emails I send are being marked as spam by my personal gmail account (understandably). The "from" field defaults ...
0
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0answers
15 views

Does MailScanner add any significant functionality to a modern Exim4?

Exim4, an MTA, seems to have support for a lot of anti-spam, virus, and malware support that can be configured into it. For example, see one user's configuration documented at ...
0
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1answer
71 views

How do I display the X-Spam headers in an Outlook 2010 mail folder?

I have two sets of spam scores stored in message headers, the first group is set by our trusty old mfiltro "spam box": X-VRSPAM-DESCRIPTION: legit X-VRSPAM-SCORE: 40.00 The second group is set by ...
0
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1answer
57 views

Blocked Senders list Outlook 2007

So a bit of a problems has arisen from a user having a load of emails from a particular address being unanswered because they were all appearing in their Junk Email folder in Outlook. We push a ...
0
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1answer
98 views

How does SMTPSVC on Hotmail set hostname in SMTP header?

The daily spam to my Hotmail-account today contained a message with a forged sender addresssuspicious enough for me to check the SMTP header. The only "Received" entry was: Received: from grogrol ...
1
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2answers
1k views

Outlook keeps putting good email into Junk Folder

I've been having a problem ever since I upgraded from Outlook 07 to 10. Outlook keeps putting good emails into the Junk folder. I'm pretty sure I know what the problem is, but I don't seem to be ...
2
votes
1answer
76 views

In Outlook 2007 is it possible to whitelist a domain plus all possible subdomains?

I frequently receive mail from a domain which uses a newly-generated subdomain tree in the From address each time, e.g. blah@foo1.bar2.example.com glarg@foo3.bar4.example.com The subdomain names ...
1
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0answers
57 views

Spam-tag chinese spam mails via ISPConfig

I'm looking for a way to get rid of the ton of - I assume - Chinese spam mails I get every day. Is there a way to filter out mails which contain Asian characters in the subject? I googled around but ...
0
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1answer
28 views

SMTP Headers Guide [closed]

Is there a guide/cheat sheet that explains Email/SMTP headers in detail? I could not find any useful resources after plenty of Googling. The purpose is to understand the headers in order to be able ...
1
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0answers
27 views

Exchange 2010 OOF spam response

We're using a Linux mailfilter/smarthost to filter email and tag it as spam before it reaches the Exchange 2010. Email that is over a certain threshold is simply dropped, but some small amount of spam ...
0
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0answers
133 views

Blocking or filtering chinese spam using postfix

My mail server runs postfix, spamassassin, amavis and sieve. Using a combination of any of these, is it possible to block or tag any mail I receive that is written in non-"English" characters? I.e ...
1
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1answer
342 views

Postfix is Sending Spam [closed]

I have an Ubuntu 12.04 server, hosted on AWS, that powers a dozen WordPress installations using Nginx and php5-fpm. The problem just began one day. My server was down. Panic! Whenever I turned it on ...
0
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4answers
1k views

How do scammers get your contacts when they send emails that appear to come from you? [closed]

Everyone is familiar with ploys where scammers send fake emails to people in your contact list saying things such as "I am in jail in the UK and need you to wire $10,000...". When this happens to ...
0
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1answer
639 views

qmail server, failure notices. Is the server compromised?

Ive hosted my own email for years now, and only recently have I started receiving failure notices that I have not sent. Below is an example of a header Hi. This is the qmail-send program at ...
2
votes
2answers
2k views

conclusive way to block “onunload” spam (“are you sure you want to navigate away?”) [duplicate]

i'm looking for a conclusive, 100%-effective way to block this latest hideous trend of marketers and scammers alike. you'll be familiar with it yourself - it's a very easy way to tell whether or not ...
2
votes
1answer
472 views

DMARC Email SPF policy_evaluated & auth_result have inconsistent status

Some ( but not all ) of the emails from our service are flagged as phishing by gmail and spam by hotmail. The emails being marked as phishing are sent from an application deployed on EC2 VMs which ...
0
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1answer
132 views

Encrypted mail is rejected by mailserver

I started sending mail encrypted with openPGP (Thunderbird + Enigmail) this month and it has worked perfectly for several weeks. Today I attempted to send an encrypted message, but received this ...
4
votes
1answer
353 views

How can I stop “clipboard hijacking” globally? [duplicate]

this is getting to be a real bugbear of mine, and from what i understand it's becoming more common. a few of you might have heard of tynt, a site that offers clipboard-hijacking services. with their ...
0
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2answers
258 views

Blocking ransom-ware like Cryptolocker

Here's the scenario. We've got around 15 - 25 physical machines, a few virtual ones, 3 or 4 file servers, mobile devices - the works in a single domain. A user reported that they'd been infected with ...
0
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0answers
118 views

SMTP blocking a legit email, no way to contact yahoo or anyone about it?

Very frequently, I have trouble emailing from Yahoo to people with their own domain. For example, when I send an email from myname@yahoo.com to someoneelse@theirowndomain.com, I'm getting a bounce ...
0
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0answers
31 views

Trojan that steals Thunderbird passwords [duplicate]

I have a client that has several emails set up in her Thunderbird email client. The email accounts that were set up to this computer were sending a lot of spam. I cleaned the computer with ...
0
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1answer
138 views

apache access.log requests from localhost to localhost

My server is spamming via postfix from www-data user. In apache access.log: 90.156.208.121 - - [20/Jan/2014:17:24:01 +0300] "GET /treningi.php HTTP/1.0" 200 21025 "-" "Mozilla/5.0 (Windows NT 5.1; ...
2
votes
0answers
18 views

How can I see how much spam is blocked by specific junk filters I set up?

I've added several entries to my Blocked Senders list, but I'd like to know many messages each one is blocking. Entries that do nothing or almost nothing, I'd like to get rid of. Also, by knowing how ...
51
votes
7answers
6k views

IP address that is the equivalent of /dev/null

Is there an IP address that would result in any packet sent to be ignored (blackholed)? I know I can always set up a router with an IP address and then just have it ignore all packets sent to it, but ...
0
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0answers
39 views

Email spammed by unknown users with same domain

I had my website and email recently migrated to new server, somehow my email was spammed with some unknown users with same domain, I have been checked in server's control panel (Plesk), I never seen ...
3
votes
3answers
101 views

Changing Email address because of spam [closed]

I have an an email account, lets say info@notmyrealdomain.com. It's receiving lots of spam so I want to set up a different account and use that, let say contact@notmyrealdomain.com. I want to use an ...
1
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1answer
100 views

How do I stop/pause the fetching of mail in Thunderbird?

I have an account in Thunderbird which has not been checked for a long time (I've been using Gmail, which doesn't delete any messages from the server). So this means when I click "Get Mail" it starts ...
1
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0answers
96 views

In Outlook 2010, whitelist messages based on subject

On a business website, I have several web forms that send me an e-mail message when they are submitted. However, in Outlook 2010, these form submissions often got put in the Junk folder. To solve ...
0
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1answer
64 views

DKIM configuration on Debian

Due to the fact that many e-mails we send with our company address do not get delivered, rejected or marked as spam, I searched for a solution on the web. One of the solutions I found was to use DKIM ...
1
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0answers
31 views

Outlook 2010, looking for a smarter “not a junk” option

Outlook 2010 marks some of newsletters I receive as junk. To move an email from a “Junk e-mails” to “Inbox” I right click on the email and then select “Junk” from a context menu, then click on “Not a ...