All Questions
Tagged with spam spam-filter
90
questions
-2
votes
1
answer
62
views
Spam filters: IP address with no history v. good history [closed]
Zoho gave me an IP address with no history this week. Senderscore.org says there's insufficient data to evaluate it. At other times Zoho has assigned me an email sending IP with a fair or good score.
...
- 3
0
votes
0
answers
79
views
Multi-message anti-SPAM filter in SpamAssassin
My vendor's database has been stolen and I started to receive spam messages in a huge amount. It is being sent by spambots / spam scripts, so sender and recipient email addresses are always fake. The ...
- 163
0
votes
1
answer
691
views
Spamassassin not scoring correctly
I have Spamassassin running on a Ubuntu/Plesk server. It was working relatively well until recently but now seems to be letting through random spam messages.
These messages seem to trigger plenty of ...
1
vote
0
answers
139
views
Include matching rspamd rules in mail headers
Spamassassin has a feature to include the matching rules in the headers of mails flagged as spam, so one can see why the mail was classified as spam and possibly adjust or create mailbox filters that ...
- 1,733
2
votes
1
answer
4k
views
DMARC record is valid, but your domain's None/Quarantine policy does not yet protect it against email spoofing and phishing
People,
Using the website: https://easydmarc.com/tools/dmarc-lookup?domain=name.com
I got this error:
DMARC record is valid, but your domain's None/Quarantine policy does
not yet protect it against ...
- 1,305
0
votes
1
answer
162
views
Postfix - Eliminate sender domain based on recipient email address
Does anyone know of a way, using Postfix, to block a domain as soon as it tries to send to a specific recipient address?
Spam typically goes to several recipients in my organization. Some email ...
- 155
1
vote
0
answers
108
views
spamassasin unable to read Japanese when it is html encoded
I would like to block some emails which contains certain Japanese words, but spamassassin fails to detect such words when the email is HTML encoded, for example:
This is a multi-part message in MIME ...
- 469
1
vote
0
answers
154
views
Continuous SPAM from certain IP/s hosting provider, how to report them if not responding at [email protected]
last maybe 4 weeks is coming SPAM e-mails from various domains. In common is that when i paste the source code of the e-mail to
https://www.spamcop.net
is detected this provider and their mailbox: ...
- 536
1
vote
1
answer
319
views
How to minimize chances of one's domain being falsely blacklisted (uribl)
My side job is to admin my wife's company domain. It's only used as a domain name for Google mail and tools (slides, docs, etc...).
Although she used her domain for email for many years without any ...
- 113
0
votes
1
answer
69
views
Is it ok (regarding spam) to use yahoo to send email from our domain [email protected]?
I m enough of seeing my email arriving in spam folder. I would like now to send my emails not from my smtp server but from yahoo mail server. When you have a yahoo account, you can choose to send ...
- 133
-1
votes
1
answer
62
views
How is it possible for spammers to keep pestering me with FAKE domains when all e-mail sending providers have these insane obstacles to go through?
I keep getting e-mails to my Gmail account from made-up domains such as:
@mtixusu9shbyusyr6.org.uk
@mpqyriexqpvramtkn.org.uk
And so on... (Yes, I checked some of them and they are not actually ...
-1
votes
1
answer
203
views
Mail Server IP address is getting blocked by Spamhause
I have use my mail server public IP address for years. But now it is blocked by spamhause. But no special no illegal activities happened on my network. We have very good monitoring solutions and no ...
- 230
5
votes
2
answers
15k
views
Spam passing postfix config "hostname does not resolve to address: No address associated with hostname"
On a postfix MTA MX setup, I have a spam mail pass two checks which it definitely shouldn't.
The postfix/smtpd process logs these warnings, which should be a hard fail in this setup:
hostname * does ...
- 359
0
votes
1
answer
53
views
why two spam policy apply on the same email
Recently, we made some Spam setting as below shown, but don't know why the result is, emails are prepended with 'spam' and move to junk mailbox at the same time. We want SCL 5 emails is prepended with ...
- 71
1
vote
1
answer
781
views
Gmail detects emails as spam from domain with neutral reputation
I have a new domain and mail-in-a-box server set up correctly. Unfortunately, when sending to Gmail, it treats emails from my domain a a spam.
The domain is not blacklisted and DNS settings are also ...
2
votes
0
answers
1k
views
Rejecting emails with mismatched Header/Envelop FROM
We've been receiving some spam/phishing emails that are managing to get through on occasion and the majority have a MAIL fROM our domain but their ENVELOPE from is whatever spammy address.
My ...
- 355
0
votes
1
answer
3k
views
Postfix allow incoming mail for specified domain from specified ips
I am running a Postfix mail server. Some domains are configured that the DNS MX record is set to an antispam service. This service is forwarding the good mails to our mailserver. Some sender are ...
1
vote
1
answer
766
views
Postfix - Send spam to different email address
I've researched for an answer to this question and can't find anything.
I have Postfix running on Debian Stretch. I will soon be setting up Rspamd.
Here's the logic of what I want to have happen ...
- 199
1
vote
1
answer
6k
views
Exchange office 365 transport rules to block spam when FROM doesn't match smtp.mailfrom or return path
I'm sure this type of question has been answered already so I apologize in advance, but I can't seem to find anything. I have spf, dkim, dmarc all setup so I'm not worried about outgoing spam, but I ...
- 11
0
votes
1
answer
1k
views
filtering spam emails with Chinese subject
A client have ton of Chinese spam. All look similar to this one:
Return-Path: <[email protected]>
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on
hotel492.dedicatedpanel.com
X-...
- 882
2
votes
1
answer
726
views
TXT entry in DNS for both gmail and amazon ses
It seems adding a TXT entry in DNS about Google is a good practice (when using gmail to send mail) to prevent being considered as Spammer. So I could add a TXT entry in my DNS records to:
example.org ...
- 125
1
vote
0
answers
34
views
Exchange rule to trigger on "From" addesses of format "email <email>"
We are receiving large email flow with an interesting pattern of "From" address. They forge body "From" address as "spoofed local email ". Example: From: [email protected] <[email protected]&...
- 824
0
votes
0
answers
355
views
Could two emails sent at the exact same time to the same user cause spam filtering?
we are setting up a mail service which will send emails periodically.
There are two kinds of email.
One which is sent three times a day (8, 13, 17 o'clock).
Another which MAY be sent at 8am ...
- 101
5
votes
1
answer
14k
views
Improve Spam Confidence Level (SCL) for outgoing emails
I have a postfix SMTP server on Ubuntu. I have valid SPF and DKIM records, as verified by the email header my customer received.
Authentication-Results: spf=pass (sender IP is XXX.XXX.XXX.XXX)
...
- 1,041
1
vote
1
answer
251
views
smtpd_recipient_restrictions: Some RBLs working, but SBL isn't
I'm trying to set up postfix so that it uses blocklists to block spam.
This is my restriction setting in main.cf:
smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,...
- 11
0
votes
0
answers
83
views
SpamExperts filtering outbound mail
I've got a hosted domain & mail server. It is attached—somehow—to a SpamExperts installation. I've been training the filter for years and it does a fine job filtering out the incoming garbage.
...
- 123
0
votes
0
answers
828
views
Exchange 2013 -Prevent Spam emails from outside but with my internal domain name
my apologies if this question was asked and answered previously.
we have Exchange 2013 email server. We have been seeing some of the emails are coming from outside but using our own domain name which ...
- 41
0
votes
0
answers
258
views
Postfix selectively bypassing the spam
I have Centos 7 installed and postfix as MTA on the server. Here is my anti spam postfix additional configuration:
# main.cf ANTI SPAM
disable_vrfy_command = yes
smtpd_delay_reject = yes
...
- 299
1
vote
1
answer
3k
views
SpamAssassin with dovecot-antispam training
I'm trying to get dovecot-antispam working with SpamAssassin' sa-learn. This is my Dovecot configuration:
antispam_backend = pipe
antispam_trash = trash;Trash;Deleted Items; Deleted Messages
...
- 404
2
votes
1
answer
297
views
Can IP reputation be affected due to automatic forwarding?
I am hitting a dead wall with the support team of my email hosting provider.
The IP they assigned me was blacklisted and so sending emails to AOL.co.uk end up getting rejected. After several emails ...
- 135
3
votes
1
answer
2k
views
Exchange 2013 IPBlockListProvider blocking some (but not all) matched IPs
I have configured our Exchange 2013 Edge Transport server to utilize several IPBlockListProviders including Spamhaus. While they work great most of the time, there are still some emails which despite ...
- 31
1
vote
1
answer
317
views
relearn bayes autolearned spam when mails already processed by exchange
I'm using postfix with amavis and spamassassin to filter out spam before relaying everything to an exchange server. Regularly I got mails which weren't catched by spamassassin, even worse, they were ...
- 13
-1
votes
1
answer
276
views
My server mail going junk in hotmail and yahoo [duplicate]
All my server mails going to spam in hotmail and yahoo. Here is my full mail source. Can any one please help me to sort out this issue ?
x-store-info:4r51+eLowCe79NzwdU2kRyU+pBy2R9QCDI9u8Kc1Jen/...
- 1
3
votes
1
answer
5k
views
Postfix Limit mail for domain from IP range
I have multiple domains and email accounts on my postfix server. All of them get slammed with spam despite all my attempts to get it under control, I broke down and started paying for a pass external ...
- 139
0
votes
1
answer
668
views
Exchange 2007 ignores whitelist (BypassedSenderDomains) when IP is found on a block list
On my Exchange 2007 machine I configured the IP block list provider to query
zen.spamhaus.org
bl.spamcop.net
dnsbl.sorbs.net
some of our business contacts or on those lists and get blocked by ...
- 7,059
0
votes
1
answer
4k
views
postfix header_checks - regex spanning multiple lines
I would like to create a spam filter that spans multiple lines in headers. This is my /etc/postfix/header_checks file:
/^From:.*name[0-9]+@.+[\r\n]+To:.*name@domain\.com/ REJECT
It's a valid regex, ...
- 109
3
votes
2
answers
1k
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 ...
- 53
0
votes
1
answer
127
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 ...
- 13
1
vote
1
answer
117
views
Training a spam filter based on Mailman moderator's actions?
I'm planning a Mailman server, and looking for a good way to enable list moderators train a spam filter (likely to be either spamassassin or dspam). Has anyone come up with a good way to run training ...
- 5,941
1
vote
1
answer
4k
views
GMail sends basic email to spam folder. SPF DKIM ok? [closed]
I am trying to send an email from my server using Mailgun. It's a very basic plain text email but for some reason it is ending up in spam. SPF and DKIM passes. Any ideas? I don't have any clue. This ...
- 133
0
votes
0
answers
95
views
How to better block phishing spam due to heartbleed?
I imagine it won't take long for spammers to recognize that Heartbleed is an ideal way to do phishing. I am thinking of ways to mitigate the phishing risk, I mean just this time for the heartbleed bug,...
- 135
2
votes
1
answer
6k
views
Filter spam emails from being forwarded by exim4
I was studying and searching 2 days about how to configure my exim/spamassassin/clamd configuration.
I have the next situation:
I have an email [email protected] redirected to [email protected].
Unfortunately, ...
- 49
0
votes
1
answer
76
views
Evaluation of mail server configuration
I have a mail server configured to use DNS real-time blacklists (DNSRBLs), e.g. zen.spamhaus.org, to determine whether delivered email is spam or not.
I would like to evaluate my mail server's ...
- 133
0
votes
1
answer
868
views
Same email is evaluated as a spam for one user, and regular for the other
I have mail server, with installed spamassassin to filter spam messages.
Problem I faced is that at 02h first user received email that is treated as a spam (and is was a real spam, moved to spam ...
- 863
1
vote
1
answer
267
views
Assistance on why email is being marked as spam [duplicate]
We are trying to send out a mass email for a client of ours through a third party sender and it is always being sent to the spam folder rather than the inbox. I have below the headers from the email.
...
- 11
1
vote
3
answers
2k
views
How to prevent Linux server from spamming?
I installed mail scanner for spam protection, but is there any script for Linux to notify me or email me that some one spaming on my server ?
- 339
1
vote
3
answers
1k
views
Are generic reverse DNS entries acceptable for an outgoing SMTP server?
Our PTR records are managed by our ISP, as our ranges are too small for them to consider delegating to us. So, every time I want to update an entry, I have to email their support team.
In an effort ...
- 358
-1
votes
1
answer
634
views
Using Spam Assassin as email proxy
I'm looking to setup a Spam Filter Proxy for my clients, not too many mind you, and have it as transparent as possible.
I read about SAVASM and Spam Vigilante, and while they are perfect I guess for ...
- 367
1
vote
0
answers
68
views
How can I prevent my messages from being marked as spam by Gmail? [duplicate]
I'm working on a PHP application. Swift Mailer is used to send messages to clients. Messages are personal (like appointment confirmations with specific dates/times for the receiver), so we're not ...
- 411
0
votes
1
answer
1k
views
Barracuda Spam Filtering vs. other enterprise level solutions [closed]
I am looking for comparison of enterprise level spam filtering solutions in the context of Barracuda Filtering - pros and cons kind of summary.
I did hear a lot of negative noise about Barracuda Spam ...
- 151