Related to email protocols, clients, servers, content, and message format.

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-3
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0answers
22 views

I am at an impasse here, I keep getting listed on blacklists for spamming [on hold]

I am not a spammer nor would I ever consider it, however I do run a server just a personal family server consisting of an 8 bay NAS running QTS OS. I run the net2ftp appliance. For network ...
-1
votes
0answers
8 views

How to protect my Audio book on micro SD card [on hold]

I am into audio book store on micro SD card but most time people do copyright of my production. I need your advice on best way to protect my product on micro SD card.
1
vote
0answers
11 views

Mail from Outlook to GMX: via Yahoo?

On inspecting source of a clear scam mail I received, I noticed that the mail send from Outlook to GMX has somehow passed through Yahoo servers - how come? Is it some way to hide their original ...
0
votes
1answer
56 views

How can I test my spamfilter under real world conditions?

We are currently planning to migrate our outsourced mail solution to our own servers. The last thing we need to test is the spam filter. We are going to use a cloud based spam and anti virus filter ...
0
votes
1answer
74 views

Sites sending email using my email address

Today I was looking through my spam folder and noticed an email: The sender was myself, assume my email is xxx@gmail.com, on the from section it says xxx@gmail.com via clicktheprofits.com Does ...
1
vote
3answers
152 views

What is the simplest way to send an anonymous email?

I would like to send an email that can't be traced back to me, is there a simple direct approach to do that? I mean an electronic way that doesn't involve me going to an Internet cafe wearing a ...
1
vote
2answers
53 views

Is it possible to digitally sign an email twice?

User A encrypts an email with the public key of user B and digitally signs it. User B receives this message and decrypts it. B wants to forward it to user C, encrypts it with C's public key and signs ...
8
votes
3answers
77 views

How can you prevent email addresses from being harvested from a registration form?

When you go to a website's login form and enter the wrong credentials, the website can give you one of three error messages: Your email is wrong Your password is wrong Your email or password is ...
1
vote
1answer
73 views

Is the following e-mail fraud technically possible?

Summary: Can email be intercepted and modified by a 3rd-party during transit from the sender to the receiver? If so, can this interception be detected? Details: My friend (A) (mailbox at popular ...
-2
votes
0answers
18 views

detect forged e-mail system for windows? [closed]

some instances people send emails with false or "forged" headers. How can detect forged e-mail? (some program in windows)
1
vote
1answer
52 views

How to secure/cleanup my accounts after having an old email account breached

I have two email accounts. My main one that I created a few years ago and switched to, which has a very strong/unique password that is not written down or stored anywhere. It also has 2-factor auth ...
15
votes
3answers
2k views

Somebody is spoofing my email to send spam messages, and I have no idea how to block

Someone is using my Google Apps Email ID to send spam messages and I've received 2000+ undelivered and autorespond emails. I have no idea how to block this because the spammer is also using my email ...
0
votes
1answer
42 views

Where can emails be sniffed from? [duplicate]

I understand that you should not send private information in emails due, in part, to the fact that this traffic is usually unencrypted and can therefore be sniffed while in transit. Where would a ...
5
votes
1answer
128 views

I emailed someone a picture of a check I wrote for them. What now?

On a whim, I emailed the intended recipient of a check I wrote a picture of that filled-in check to indicate I was about to mail it out. The full front of the check, with amount, my signature, account ...
1
vote
1answer
49 views

Is it possible to prove that a forwarded email has been tampered with prior to being forwarded?

I have requested that an old email exchange between myself and HR be forwarded to me by a previous employer. They complied with the request but I suspect that the body of the exchange which they ...
2
votes
0answers
46 views

How Vulnerable Is An Older Version Of Outlook As An Email Application?

I am significantly displeased with some of the newer versions of Microsoft Outlook. I would prefer to continue using my older version from Office 2000 (on Windows 7 using workarounds). As a networked ...
13
votes
6answers
3k views

Is it a security issue to allow nearly identical email addresses when registering?

Say you have a website where it is possible to create accounts for all of the following email addresses: 'test@test.com' 'test@test.com ' 'test@test.com;' 'test@test.com;test2@test.com' Should this ...
3
votes
2answers
83 views

How to view e-mails without internet connections?

If I want to make a secure PC that has zero network connection, how can I view my e-mails on it? Are there any tricky solutions to still view my e-mails while I have no network connection? And all ...
6
votes
1answer
197 views

Bank Has Emailed My Social Security Number

I'm in the middle of getting a mortgage. Just now, my bank sent over an e-mail (sent to my Gmail account) with a bunch of .pdf attachments of documents I'm supposed to sign and return. The first ...
1
vote
3answers
93 views

Can Google Chrome read/scan my ProtonMail inbox page?

If I used Google Chrome to visit ProtonMail website, it would not be difficult for Google to read my emails since it would just need to scan/read the content of the page. Messages are encrypted just ...
3
votes
1answer
73 views

I am getting mail from cron daily and can't identify the source

I am getting a mail from crontab and can't identify the source of it. My site is brand-new so I am not sure what this is doing or its purpose. Is it some hack? <html> <head> <META ...
0
votes
1answer
53 views

Mail server security: Mails to internal receivers with faked sender address

I noticed that I am able to send emails from my company's mail server to internal receivers from faked inhouse sender addresses without problem and I'm wondering if this should be supposed a security ...
3
votes
4answers
165 views

Can my computer get infected if I hover the mouse to check the thumbnail of an e-mail attachment?

So, today an user sent me an e-mail about a suspicious e-mail. When I opened it to check it, I accidentaly hovered the mouse over the "doc.jpg" and it opened the image thumbnail. I never bothered to ...
0
votes
5answers
253 views

My email hacked

Someone has definitely gained access to two of my alternate emails. I know this by looking at the login activity. By looking at the email logs I discovered that the IP that is always gaining entry to ...
0
votes
1answer
38 views

How do country's block politically charged spam? [closed]

I have a friend who is returning to China shortly, and I wanted to stay in touch with him so I got his email address. I was wondering what precautions does China (or any other dictatorial regimes for ...
1
vote
0answers
31 views

What informations leaks during send mail programatically from google account [closed]

Imagine if you are sending an email by the gmail.com using web online interface so entering the website of google, then compose mail and send it. In this case your ip address is not revealed to the ...
0
votes
1answer
35 views

Email address used by someone else to order on line [closed]

Someone, or however it's being done, is ordering things from all over the internet, using my son's old email address. He no longer uses that address, however, they are placing orders to our address. ...
1
vote
2answers
60 views

Malicious email attachments analysis

I have a question regarding incoming emails with malicious attachments on my email server. So, my idea, in my ideal setup, is to have a machine aside running virtualization software. This would run ...
3
votes
1answer
48 views

Access via link in Email - How can I make this most secure?

I need your professional opinion on this matter, please. The app I'm building has 2 parts: Teachers & students. Teachers use the app to build a project and attach students to it. Then, the ...
9
votes
2answers
78 views

Best practices when forwarding an email or copy / pasting from confidential information sources?

I get asked this a lot from older people, or for legal matters. They want to forward an email message they've received to another party, while removing any identifying information from the first party ...
1
vote
1answer
44 views

Social engineering attacks terminology

Let's suppose that a hacker send an email containing a Word document with a malicious macro to a sysadmin. Does this attack fall under the category of spear phishing?
3
votes
3answers
125 views

Is it safe for web application to receive and parse emails?

I am not sure, if this question needs to be narrowed down to web applications only, but that is my particular interest. Suppose a web application receives (retrieves from mailbox) emails, parses the ...
3
votes
1answer
38 views

Can STARTTLS protect emails between two organisations?

There are a few threads on STARTTLS but none seem to provide a clear overview of what STARTTLS can and can not do with respect to encrypting email in transit. So my question is, can STARTTLS be ...
-4
votes
2answers
108 views

Can forensic investigators find my webmail emails in my laptop?

When I send an email using the web interface of Yahoo Mail or Gmail, can the email can be found somewhere (even if encrypted) on my laptop by forensic investigators? Somewhere on my hard drive or RAM? ...
0
votes
1answer
45 views

“Secure” emails from unfamiliar source(s)

The context is long, so I'll ask my question first. If an encrypted message is received from an unfamiliar sender and it's spam, how can I avoid receiving further messages of the same sort? If it's ...
3
votes
2answers
39 views

Must mail relays always indicate the use of encryption in the “Received:” header field?

When an email message is sent with transport encryption, you can tell it from the “Received:” field the receiving mail relay adds to the message header. > Received: from [...].google.com ([...]) by ...
54
votes
11answers
11k views

Why would a spammer try to get a (normal) image of mine?

Yesterday I found a spam mail in my inbox. I inspected it in order to find out why DSpam and SpamAssasin failed. You can find the raw German mail here, here's a translation: Good Morning. We got ...
4
votes
2answers
70 views

Should I email contents of a https form submission

I am building an online registration form for a voluntary organisation in the UK and am considering data security measures. The form will be served up over https and there may be an optional payment ...
3
votes
1answer
125 views

Prove ownership of a GMail account

Is there a way for a person to remotely and irrefutably demonstrate ownership of a Gmail email address? I've considered using DKIM signatures, but this has problems: PGP Key Signing Robot DKIM ...
1
vote
2answers
49 views

PGP Key Signing Robot DKIM Verified Emails

It occurred to me that DKIM verified emails, from major players (e.g., GMail), could open the door to more modern OpenPGP robot key signing authorities. The idea would be to ask people to send a key ...
6
votes
1answer
68 views

iOS Mail App Security

I have my own domain name and I had some issues with the delivery time. So, I started looking at the mail header to see where my mail was stuck and why. That is not the issue.. While messing around ...
1
vote
1answer
61 views

Access to email without antivirus [duplicate]

I am doing a test where we want to asses whether an email with a benign virus in it, exits a network. I need a means to receive the test emails I am sending from inside the network, without any ...
-1
votes
1answer
68 views

“FROM” mail spoofing [duplicate]

I just received a mail from my boss saying someone with my mail has send some request for money. I is kinda serious and I know it is easy to spoof a mail, but the mail is myname@mycompany.com. So my ...
0
votes
0answers
19 views

Metadata and Adding Files

If a person had files they wish to add to a computer and had physical access to the computer could the docs or emails be added with false metadata to indicate the documents had been added at a ...
1
vote
2answers
73 views

How to encrypt data in email body sent by (offline) app and decrypt on server

I've build an (offline)app (HTML/JS). The app allows the user to write a report (event when he is offline). The data from the report is sent via the body of an email to the companies special email ...
1
vote
2answers
164 views

Is this some sort of scam or do I have stalker?

Sender: msmith11@mail.com Emails are from IP address:74.208.4.200 Emails are weekly. all text, no links, no images. Some Depict sexual fantasies in high detail directed to a female - which I am. ...
5
votes
1answer
784 views

Is it safe to email the contents of your .htaccess?

If you assume that you're not on HTTPS or that, at least, the security of your connection is compromised, is it safe to email someone the contents of your site's .htaccess file? I'm a novice in this ...
0
votes
2answers
78 views

How to know when to install a certificate?

How do you actually know when a certificate is issued that your system doesn't recognize, whether to trust it or not? When I was setting up Outlook for Gmail I got prompted to install the following ...
-1
votes
1answer
34 views

Signed E-Mail certificate invalid [closed]

I sent a valid signed e mail a few weeks ago. Now I reinstalled everything on my computer (including the OS). Is the certificate now invalid?
1
vote
1answer
91 views

Login on public Wi-Fi networks using HTTPS [duplicate]

Is it safe to log in to my e-mail account with my iPad's Safari through a public Wi-Fi network (let's suppose someone is eavesdropping the traffic) provided that the e-mail provider uses HTTPS?