Questions tagged [spam-prevention]
Generally refers to techniques that aid in avoiding receiving any email or message that is either unwanted or unsolicited.
420
questions
2
votes
1
answer
129
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 ...
- 261
0
votes
0
answers
21
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
97
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
132
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
...
- 33
1
vote
1
answer
88
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 ...
- 277
1
vote
0
answers
25
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 ...
- 33
0
votes
1
answer
75
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
75
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 ...
- 2,593
0
votes
1
answer
99
views
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 ...
- 260
1
vote
2
answers
917
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
274
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
102
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 ...
- 705
-1
votes
2
answers
95
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
727
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
188
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 ...
- 2,039