All Questions
Tagged with spam or spam-prevention
422 questions
0
votes
2
answers
152
views
Someone is sending spam from my email server. Does anyone have any suggestions on how to diagnose and fix this issue?
Someone sending spam emails from my email serve and I keep getting email undelivered and bounced back.
My logs for outgoing emails:
Aug 25 13:36:42 mail postfix/smtp[2489070]: 0CE3E1103171: to=<...
0
votes
1
answer
76
views
How does one match the envelope recipient (not sender!) in a Sieve script if the receiving mail server is rewriting addresses?
The situation is that my mailbox receives spam to known spam addresses (a combination of a mailbox alias in the mail system and a recipient delimiter) that doesn’t has a correct To: header set. This ...
- 368
2
votes
1
answer
311
views
What can POP3 users do if their email provider forces a server-side spam folder on them?
I use the Thunderbird email client to receive my email via POP3 protocol from my email service provider GMX. I never needed and never used a spam filter. I have been very happy with this setup for all ...
- 358
0
votes
0
answers
43
views
Silence unknown callers on Macbook
I have silence unknown callers on in my iPhone. The unknown calls don't go through my iPhone anymore but still ring on my Mac. Is there a way to silence unknown callers on my Macbook?
- 131
0
votes
0
answers
111
views
Postfix: check sender IP but don't reject
I need to do the following with Postfix: when receiving mail from remote server, check sender IP with various blacklisting services (e.g. spamhaus or abuseipdb), but avoid rejecting mail automatically,...
- 101
0
votes
0
answers
153
views
Multiple Domains, Single IP Blocked by Gmail
I have two domain names and 1 email server.
When I send an email from my server to my gmail account, and then view the original message, emails from both domains are stated to:
Pass SPF
Pass DKIM
...
- 43
1
vote
1
answer
157
views
Stop occasional Thunderbird sound notifications for junk emails
Sometimes, but not always, a new email notification sound plays when junk mail is received.
So far it is only for a Hotmail account. It is possible that some junk emails first go to the inbox and are ...
- 297
1
vote
0
answers
27
views
How to prioritise one domain name over others in rDNS?
I have a single remote server and multiple domain names. This server hosts webpages under certain domain names - say domain1.com - and hosts a webpage with an associated mail server under a separate ...
- 43
0
votes
1
answer
82
views
Does SORBS (DNSBL) contains domain names?
I’m researching SORBS (Spam and Open Relay Blocking System) and its function in DNS-based Blackhole Lists (DNSBLs).
My question is straightforward: Is SORBS limited to storing only IP addresses, or ...
- 35
0
votes
1
answer
87
views
Outlook do not trusts sender
My Outlook 2021 Pro application blocks emails that comes from my colleague from particular domain. E-mail contains two png's that are company logo. Mail is moved to Spam. Trying to tell Outlook it is ...
- 2,723
0
votes
1
answer
156
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Privacy concerns related to OpenPGP (Email Encryption) key being searchable on key servers
I am considering configuring PGP (Pretty Good Privacy) in my Thunderbird email client to enhance the security and privacy of my email communication.
However, I am concerned about potential privacy ...
- 270
2
votes
2
answers
2k
views
What is X-Google-Original-From used for?
In connection with:
https://unix.stackexchange.com/q/763097/101935
I am looking to understand what the use and purpose of X-Google-Original-From actually is.
From what I see, I think I've managed to ...
1
vote
1
answer
388
views
How to train an email server's junk filter using an IMAP offline client?
I frequently use offline email clients such as thunderbird and K-9. I also am trying to do a better job of training my email account's mail filter to more accurately filter junk email.
I see ...
- 173
1
vote
3
answers
143
views
Outlook: Is it possible to define a filter rule comparing a number in a header field?
In the mail I receive in Outlook, some service provider has set up a SPAM filter with a comparatively low level, tagging the subject with [SPAM] when the message is not SPAM in several cases.
In the ...
- 791
-1
votes
2
answers
104
views
How does a message get back to a spammer? [closed]
I know that replying to a spammer is not a good idea. But I've always wondered how does a spammer receive the reply? I know that the data in the email header can be spoofed. And I can decipher some of ...
- 11
1
vote
2
answers
956
views
Filter emails by sender address format in Outlook
For the past year I've been getting a lot of spam mail passing through the Outlook filter.
The spam emails are almost all unique in content and wording, but they have one thing in common: the sender ...
- 111
0
votes
1
answer
247
views
Marking forwarded third party messages as spam in Gmail without marking the forwarder as Spam
I have an Outlook web account that forwards emails to a Gmail account.
The Outlook account uses a redirect mail rule to redirect messages sent to the Outlook account to the Gmail account so the email ...
- 2,069
0
votes
1
answer
746
views
Junk mail get to inbox despite setting "Safe List Only"
I have Outlook setup with a Hotmail email address. To combat spam I have set the following setting in the Junk Email Options in Outlook:
In Junk Email Options, Options:
Safe List Only is enabled
...
- 543
0
votes
1
answer
185
views
My emails are seen as spam by Gmail
I have a email server with postfix, dovecot, spamassassin, etc.
www.mail-tester.com gives me 10/10.
www.spamscore.net complains about the spf (SPF record SOFTFAIL) and reverse DNS: I have neither ...
user1798640
3
votes
1
answer
2k
views
Outlook: one-click-solution to block sender and mark as read / delete
Using Microsoft Outlook 365 (Version 2303) with Exchange Server from my university, I'm looking for a simple, one-click-solution for junk emails, which should do the following: first, block the sender ...
- 133
0
votes
1
answer
860
views
Thunderbird has started to leave automatically flame-market junk in inbox instead of moving it to Junk folder. How to fix?
Thunderbird used to move mail that it marked as junk to the junk folder, but now many messages that have been automatically designated junk (with the flame marker) are left in the inbox. What's the ...
1
vote
1
answer
162
views
How enable the junk filter only in INBOX?
As the heading says: Is it possible (or at all necessary) to enable Thunderbird's junk filtering only in INBOX, i.e. disable it in all folders except INBOX?
Please note that I am not sure whether TB ...
- 1,922
1
vote
0
answers
113
views
Debian server getting spammed through
This server has been live for many years, however, recently it is under attack by spam.
I have not been able to plug the hole they are using. It seems that the spam is using the sasl_username=clamav.
...
- 11
0
votes
1
answer
324
views
Can I create rule to filter all mails to spam except [email protected] in Outlook [duplicate]
In Outlook I want to create a rule that filters or forwards all emails except the one from my organisation domain (eg.
***@company.com). Any rule which can block or move to spam others apart from ...
- 101
0
votes
2
answers
142
views
Is it possible to create an Outlook rule to send all messages to junk if a certain header is missing?
We have a spam filter that adds a header that indicates that the message has gone through the filter. In the Outlook client, is it possible to create a rule that sends all email to the junk folder if ...
- 123
0
votes
1
answer
36
views
make outlook use restricted view on spam messages also after moving to deleted items folder
i'm using outlook 16.0 as part of the microsoft 365 subscription.
currently i'm on version 2210.
spam messages are moved to the "junk email" folder.
those messages are getting displayed in ...
- 419
0
votes
2
answers
930
views
Automatically filter security-test spam on Outlook web version
At work our security department frequently sends fake phishing mails to see who is dumb enough to click them.
All these mails originate from the same server (smtp.mailfrom=psm.knowbe4.com). Is there a ...
- 146
1
vote
1
answer
905
views
Transportrule -> Text Pattern Regex to capture domain and subdomain
I'm running an On-Premise Exchange 2010 with the following Transportrule checking for Text Pattern on Sender Address:
^.+@(?=.*microsoft)(?=.*.com).*$
Above Regex gets captured if "microsoft&...
- 121
0
votes
1
answer
753
views
Mark an email as spam that contains javascript tags (advanced spam filter)
I was currently testing the setting of Office 365 anti-spam inbound policy. I am having issues with some settings. Here they are:
JavaScript or VBScript in HTML
MarkAsSpamJavaScriptInHtml
Messages ...
- 11
2
votes
1
answer
300
views
How to remove the random stock images from Windows 10's search pane?
I'm on Windows 10 Pro 21H2 version.
In the last few days, my search pane started to present some random stock photographs (mainly landscapes, I believe) (from Microsoft Bing) upon opening it.
I find ...
- 247
1
vote
2
answers
7k
views
Control email sent on behalf of different address with Outlook Rules
I frequently filter spam by domain from companies that do not respect "unsubscribe". In Outlook, I use the rules wizard to set a rule where specific words ("@rudecompany.com") ...
- 138
3
votes
1
answer
6k
views
Remove new type of ad on Windows 10 search bar after Windows update
After a recent windows update this ad is now showing up on the search bar
It a small button on the right of the search bar, and if you hover (or click) over it it shows a panel as shown
How do I get ...
- 1,773
1
vote
0
answers
222
views
rkhunter Apache2 Warning caused by phpmyadmin-Docker-Container
recently we get the following reports from rkhunter:
Warning: The following processes are using suspicious files:
Command: apache2
UID: 33 PID: 11286
Pathname:
Possible ...
- 11
0
votes
1
answer
804
views
How to extract email addresses from an E-Mail folder on the server
I am now in the situation where I need to complete my Rspamd Blocklist with the domains that are spamming me. As I cannot do this direct from my inbox, I have now the following setup:
I mark all ...
- 133
0
votes
2
answers
645
views
How block mails with certain content before moved to spam in outlook
I am getting spam mails with always the same content (and the same subject). They are sent each time from a different address. Outlook always automatically puts them in the Spam folder. However, I ...
- 103
2
votes
1
answer
115
views
Is there a way to configure Thunderbird with malicious IP DB to flag incoming mails as spam?
I checked a spam mail source and noticed it could come from a malicious server. I saw there are some malicious IP DB like AbuseIPDB collecting such IPs.
Is there a way to let Thunderbird check the IPs ...
- 355
0
votes
1
answer
857
views
Will an unknown or missing DKIM, SPF, or DMARC parameter always cause an email to be marked as spam?
I recently found that an email provider I use is unable to send email to some popular systems like aol.com, verizon.net, (and perhaps others) without being marked as Spam. I became suspicious after ...
- 103
1
vote
1
answer
296
views
Clear Thunderbird junk folder or leave the messages in?
Do the mails in the Thunderbird Junk folder serve any purpose, e.g. training data for the adaptive filters? Or can I throw them away?
Related but not containing my answer: How does Thunderbird "...
- 4,298
0
votes
1
answer
212
views
unauthorized access to dovecot services
Recently i was enable mail-relay to 3rd party tool, suddenly i found 1000 of emails are going as a spam everyday to unknown users i disable the mail-relay ,but still we facing some one login our ...
- 1
1
vote
2
answers
1k
views
Manually move marked junk mails to junk folder
Is there a way to manually move junk mails to junk folder in Thunderbird?
I have multiple email accounts configured in Thunderbird with
enabled adaptive junk mail controls for each account,
enabled &...
- 142
0
votes
1
answer
3k
views
Office 365: daily quarantine reports
I am looking to activate a daily quarantine report for all users under Office365 but can't seem to find the option in the new layout. It is no longer available under the "classic exchange admin ...
- 101
0
votes
0
answers
305
views
SpamAssasin TLD blocking
I have configured spamassasin in my hosting to block some spammer TLDs.
The blacklist email is just as this:
@.asia
@.bar
@.best
@.bid
@.buzz
@.cam
@.casa
@.cloud
@.club
@.cyou
@.diet
@.digital
@.fun
@...
- 1
0
votes
2
answers
388
views
spam email sent from my exchange account but not in my sent items
we have an issue where we are receiving emails from contacts that they have received emails from our users that contain dangerous links in the email.
The email being sent is from a previous email ...
-1
votes
1
answer
188
views
How to eliminate public listing of my email address? [closed]
I get way too much junk mail that I am not thinking of ditching my email address. I am think it is in part because my email is publicly listed somewhere?
Can I search my email listing on google etc so ...
- 1,873
0
votes
1
answer
392
views
I have received a E-mail and the ‘To:’ address is not mine
I have just opened my Mail app on my phone and have noticed a strange email at the top of my mailbox.
I am from the UK and the sender of the strange e-mail was from a .de Address. I have no reason to ...
- 1
0
votes
0
answers
214
views
Outlook.live.com - does opening a junk email trigger Open message tracking?
Generally, when mail providers place a suspected spam email in the Junk folder, and then a user opens that email, the content is blocked from loading so as to avoid triggering an Open email event in ...
- 141
0
votes
1
answer
747
views
When I mark an e-mail as "Not junk" in MS Outlook, does this in any way get communicated to Gmail?
I use Gmail's servers, and Outlook (Windows) as my mail client.
I occasionally get false positives identified as SPAM, requiring me to check my Spam folder regularly. When I see a legitimate e-mail in ...
- 323
0
votes
0
answers
260
views
307: hackers temporary redirect for javascript files
I have an http website, hosted by the service provider. My web pages load javascript files from the web server. Well, really standard scenario, but...
When I am at home, and load web page from my web ...
- 211
2
votes
1
answer
833
views
Risks of custom domain for personal email address?
I am not speaking of hosting the web server myself, I would delegate that to a well established company, for example the registrar I use for the domain name.
I want to know what the risks would be to ...
1
vote
0
answers
474
views
header_checks is applied to mail body (CentOS 7 + Postfix 2.10.1)
I have received SPAM e-mail, added regular expression to header_checks about it and when tried to forward SPAM e-mail as attachment, then this check triggered and rejected my forwarded e-mail.
Regexp ...
- 327