All Questions
46
questions
1
vote
0
answers
59
views
My email server IP is blacklisted, how can I resolve it?
The IP of our email server 154.116.254.147 was added to the UCEPROTECTL2 blacklist. The error message we received is as follows:
"I am deeply sorry, but I was not able to deliver your mail to the ...
0
votes
0
answers
530
views
Sendgrid IP Address Consistently Blocked on RATS-Spam
Overview
For our application, we use SendGrid to send emails to many of our users. Recently over the past few weeks, our SendGrid IP addresses have been added to the RATS-Spam blacklist multiple times....
- 1
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
3
answers
554
views
How to delist DNSBL?
Can not send email to some email addresses that it looks like they are using Office 365. The NDR message is coming from DnsConnectorDelivery which is:
[{LRT=11/6/2020 12:11:09 PM};{LED=451 4.4.0 ...
- 21
0
votes
1
answer
84
views
Cyren (Zxyel) classified my fresh website as a "Spam Site". I have never hosted a mail server. What now?
About a month ago I bought a cheap VPS from a popular provider, and also bought a new domain name for it. It hosts Nextcloud and TT-RSS, and I have never sent an email from it -- yet on http://...
- 101
0
votes
1
answer
5k
views
Google blacklist removal
One of the email accounts on my Debian server has been compromised (too weak password set by a client) and it was sending countless spam messages over three days.
Once I've found out that out (, I'...
- 1,491
5
votes
1
answer
26k
views
What is meant by '550 Relay not Permitted' when it comes to emails?
For the past few months, I have been emailing a company with no problems. They have been able to receive my emails and they have been responding.
A few days ago, they dropped me an email where my ...
- 155
0
votes
1
answer
7k
views
Rejected - TRUSTmanager (in reply to MAIL FROM command)
After changing an IP address of email server (Postfix stack) I've found host that denies email message with:
hostname postfix/smtp[38212]: 1AF542406D0: to=<[email protected]>, relay=xxx.xxx....
- 692
1
vote
1
answer
1k
views
Remove AS that's falsely associated with our IP from email block list
When I try to send email from our email server to hotmail or outlook.com I get
550 5.7.1 Unfortunately, messages from [216.x.x.x] weren't sent.
Please contact your Internet service provider since ...
- 228
1
vote
1
answer
5k
views
Google detect mail as spam, server is not on blacklists, got 550-5.7.1 likely unsolicited mail
about two weeks ago I had security breach, one mail account on server, caused outgoing spam, I got listed in on couple blacklists rbl. Problem was fixed, IP was removed from all black lists. I can't ...
- 11
0
votes
1
answer
213
views
How long DNS blacklist updates at Lotus Domino?
As I kown,for performance,Lotus Domino will get the DNS blacklist from the DNS blacklist sites and save it in memory.
So,it is not real time?
For example:
2016/08/30 09:37:46 SMTP Server: ...
- 3
0
votes
1
answer
2k
views
fortimail antispam has blacklisted the internal exchange mail server address
i have an exchange server for which i wanted to redirect outbound messages throught a fortimail antispam box. i created a new send connector for a test domain and used the ip of the antispam as the ...
- 482
0
votes
2
answers
2k
views
Blacklisted client: why did Postfix not reject this email?
Answer
The best answer was on the postfix-users mailing list and it is summarized here for the benefit of serverfault's users.
I had forgotten soft_bounce = yes. Always switch it back to no after ...
- 113
0
votes
1
answer
3k
views
Postfix Localhost Server Sending Spam to Itself
I have an iRedMail server that runs Postfix and am trying to determine the source of its spam problem.
I have since changed the MX records on the domain for the address receiving spam and the good ...
- 217
5
votes
1
answer
5k
views
Postfix reject_rbl_client Blacklists Not Working
I have a mail server (iRedMail) that uses Postfix. I've been getting a lot of spam, so I modified the /etc/postfix/main.cf file and have the smtpd_recipient_restrictions set to this:
...
- 217
0
votes
2
answers
175
views
How do IPs end up on the spam blacklists [duplicate]
I don't know if this is the right place to ask this kind of question but here goes.
I have 3 IPs on my server, which I'm running for shared hosting. The main shared IP gets blacklisted sometimes, ...
- 341
3
votes
4
answers
2k
views
False IP blacklisting on CBL and Spamhaus ZEN
I've gone thru this: Spamhaus XBL keeps adding my IP
I'm managing the server 23.239.30.81 on Ubuntu using Postfix.
Since last 6 months or so I started forwarding all my:
Cron Daemon logs
Postfix ...
- 283
9
votes
1
answer
5k
views
How Does DNSWL work? How can I gain better trust? [closed]
How does DNSWL work? It's clear to me when someone report a spam, but how can I gain a higher score/trust?
Do some companies report "good" servers? Or will the score go up with time without reporting ...
- 585
1
vote
1
answer
540
views
Unable to resolve IP Blacklisting with Spamhaus
I have a website which is currently assigned an IP 64.XXX etc from my hosting provider. This IP when looked up comes up clean with all Blacklist checks that I run. However, I am also being assigned an ...
- 11
-7
votes
2
answers
3k
views
How to add an email to an international Spam Blacklist [closed]
I am sick and tired of getting invitation emails from LinkedIn. When I ask the senders to stop sending these to me, the answer is always the same: they never sent the email in the first place.
This ...
- 97
0
votes
8
answers
41k
views
Remove blacklist from spamRATS
I have checked my IP in SpamRATS and the result is the following:
Standards Compliance:
Does IP Address resolve to a reverse hostname... Passed!
Does IP Address comply with reverse hostname ...
- 41
21
votes
4
answers
3k
views
What are the best methods for catching snowshoe spam?
I'm using Smartermail for my small mailserver. We've been having a problem lately of getting waves of snowshoe spam that follow the same pattern. They come in batches of 3 or 4 at a time. The ...
- 436
0
votes
1
answer
1k
views
How do I stop SPAM from being sent from my server? [duplicate]
I have a VPS which I rent and it is running Centos 6.
The VPS has ZPanel installed which is used to host some websites and emails.
One of my clients has noticed thousands of 'undeliverable' messages ...
- 311
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
1
vote
2
answers
2k
views
Mac server infected with spam agent
We have a huge trouble :( .. Our mac server makes a spam delivery. Our IP already blacklisted in about a dozen of servers (checked with http://mxtoolbox.com/). We have another computers in the same ...
- 117
0
votes
1
answer
207
views
Global Authority for Blacklisting IPs
I know that there are few common ways to block attacking IPs (such as deny in htaccess). Additional to that, we could get a huge list of IPs to block from misc sites such as :
http://www.okean.com/...
- 181
0
votes
1
answer
2k
views
A record blacklisted but not the originating IP of affected messages - Gmail rejections
A customer's email is being rejected by gmail with the following codes:
Action: failed
Status: 5.7.0
Diagnostic-Code: smtp;
554 5.7.0 Reject,
id=17756-61 - SPAM
I see the A record for the domain, ...
- 45
0
votes
2
answers
3k
views
Why are my emails going to spam folder?
My server ip is 78.46.138.249 and none of the blacklists I could find blacklist my domain. Nevertheless, many of my customers recieve their emails in their SPAM folder. I just created a live.com ...
- 145
4
votes
2
answers
12k
views
Gmail.com detect mail as spam, but the server is not on any BlackList
I have an issue with Google. (GMail to be exact)
About 1 month ago, we had a security breach, and mail was relayed through our servers.
we got listed in almost ALL Black-Lists :(
we fixed the ...
- 111
-6
votes
2
answers
2k
views
Bulk email prevent blocking
We are going to send huge bulk emails (It's an invitation to our site). I setup an instance on Amazon and installed zimbra on that along with phplist which is configured. DKIM and Domain keys are ...
- 1,241
0
votes
4
answers
4k
views
Emails are regularly blacklisted due to being hosted on a shared (blacklisted) server. What can I do besides moving away from this shared server?
My client's emails are blacklisted because his account is on a shared server which gets blacklisted from time to time. The hoster wants him to move to an expensive dedicated server.
What could I do ...
- 121
2
votes
1
answer
210
views
Will using google apps emailhosting get rid of blacklisting caused by a shared server account?
a client`s email addresses are constantly blacklisted due to other users who share the same server. the hoster does want him to switch to his own dedicated server, so he gets his own ip.
my question ...
- 121
-2
votes
1
answer
217
views
Black Listing in outbound relayed e-mail
We send outgoing e-mail with one server relaying e-mail through another server. When e-mail is getting black-listed, is it the originating server that is being blacklisted or the relay?
- 154
7
votes
5
answers
37k
views
How do I get my server off the ivmSIP/24 blacklist?
I checked my server IP using this tool:
http://www.mxtoolbox.com/SuperTool.aspx
It's come up on the ivmSIP/24 list.
What can I do to get my IP removed from this list? I have SPF records set to allow ...
- 2,793
5
votes
2
answers
8k
views
CBL This IP address is HELO'ing as "localhost.localdomain"
I am pretty lost here, my server somehow got into a blacklist. And I don't know why and how to solve it. Please take a look at the link below.
CBL List - click here
Anyone knows what is going on ...
- 197
0
votes
2
answers
338
views
My exchange 2003 mail server is blocked by RBL lists. Someone is sending spam from [email protected]
All outgoing email to external recipients from my Exchange 2003 server is getting blocked by RBL lists.
I'm new to administrating Exchange and i checked the Message Tracking Center under System ...
A M
10
votes
5
answers
54k
views
How to report spam to blacklists
Is there a central place to report spam to various blacklists ?
I regularly report to spamcop, but
I do not see the addresses I reported as listed. (I guess nobody else bothers with my regular ...
- 3,691
2
votes
4
answers
1k
views
Best practices on how to send emails on clients behalf and avoid being black listed
I am starting a business providing some online customer relationship management functionality. I want to allow my clients to create their own email lists.
I also want to allow my clients to be able ...
- 125
6
votes
2
answers
458
views
Which DNS Black Lists would you recommend to discard spam in pre-queue?
There are many black lists out there, with bad and good reputations. Also, some people recommend to use RBL lists only in score-based systems (like spamassassin) while others (including commercial ...
- 5,918
1
vote
3
answers
1k
views
blacklisted exchange 2003
Our firewall failed about 3 weeks ago and while it was being replaced we were placed on the “cbl.abuseat.org” spam blacklist. Once we got the new firewall in and configured we were able to get ...
- 147
3
votes
3
answers
2k
views
How do I prevent mail from my Exchange server from being blocked?
Recently one of our client machines was infected with a virus and I believe was spamming addresses in the user's contact list. Since then our server has been appearing on blacklists and it has been ...
- 555
3
votes
5
answers
1k
views
Blacklisting: IP's or domains?
I am implementing a blacklisting system on my website that monitors contact forms for suspicious usage (both spam content and excessive frequency).
When I find somebody / robot that meets my criteria ...
- 493
0
votes
1
answer
964
views
plesk 9 spamassassin server wide blacklist via cron?
we're running ubuntu 8.04 LTS and plesk 9.2
our simple task is to set up a periodic black list for spamassassin, e.g. using this script ..
#!/bin/sh
#! Script by AJR to update local spamassassin ...
Kqk
1
vote
1
answer
56
views
Disallowing proxies from POSTing
I want to disallow proxies and spambots from posting in my website. What is the best way to do so?
I've downloaded a blacklist and my first idea was to disable each of ips in my .htaccess file, but ...
- 177
20
votes
12
answers
46k
views
Which anti spam DNS blacklists should used?
i want to protect my mailserver with dns blacklists for fighting the spam.
there a so many blacklists out there.
currently i use:
ix.dnsbl.manitu.net
cbl.abuseat.org
bl.spamcop.net
safe.dnsbl.sorbs....
- 568
12
votes
10
answers
6k
views
Where to go to see if my IP is blacklisted as a SPAM
This has happened before and some mail servers will tell you that your IP has been blacklisted (RBL, CBL, etc) but I can't find that site to check anymore and searches result in a site that may or may ...
- 441