Unsolicited e-mail, comments or posts, often sent out in large volumes; possibly but not necessarily commercial in nature

learn more… | top users | synonyms (1)

0
votes
2answers
1k views

Email does not pass hotmail filter #Update

I have problems sending an email from my server to hotmail it will not pass the junk folder. This is the header from an email send to hotmail: x-store-info:4r51+eLowCe79NzwdU2kR3P+ctWZsO+J ...
1
vote
1answer
55 views

Reject emails with many To/Cc recipients with exim ACL

I'm having a problem with emails with many (>20) To or Cc recipients being sent trough my mailserver. Worse these are mailing-lists so reach hunderds of people. People then reply-all causing ...
-1
votes
2answers
41 views

How to check if I can spam email with my VPS [closed]

Last time, I did have a problem with my VPS regarding being used as a spam mail server. Now I just did the backup and how can I test that I can use my server to spam or not ?
2
votes
1answer
758 views

Prevent mail being marked as spam

This is a canonical question about avoiding outgoing mail being classified as spam. I'm wondering how to prevent my emails from my site being marked as spam? I'm using sendmail. I'm trying to ...
0
votes
1answer
66 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 ...
9
votes
1answer
193 views

Microsoft is blocking mail from entire netblock. ISP doesn't know what to do?

I recently moved a client from basic T1 service to a multi-site MPLS solution with same vendor. The ISP, XO Communications, provided a decade of stable service as a T1 provider. The process of moving ...
0
votes
1answer
212 views

How to Isolate source of spam on Centos 6.3 Plesk 11 server

Been spammed and the header is showing: X-No-Relay not in my network X-No-Relay not in my network X-No-Relay not in my network X-No-Relay not in my network X-No-Relay not in my network Received ...
0
votes
1answer
34 views

On Exchange Server enable require that all senders are authenticated on all groups

I have a large number of Distribution Groups on my Exchange 2007 server. I am starting to get spam addressed to these group addresses and would like to enable the "Require all senders are ...
0
votes
0answers
12 views

How do I set up autoreply for some accounts on an anti-spam gateway?

We have an anti-spam gateway set up which forwards mail to our exchange 2003 server. This works fine, but now I need to add out of office replies. I'm trying to do so with gnarwl, but so far don't ...
0
votes
1answer
66 views

tried to spam postfix, doesn't log IP address

I've had some serious spam issues with my local postfix installation, until I found out that there was a postfix user wich was allowed to relay mails (I still don't know why this was possible in the ...
2
votes
2answers
1k views

What does the email header “X-CAA-SPAM” refer to?

I've got an application that sends out notification emails to users of the application (this is not spam; the information in these emails is solicited and useful, and is also a feature turned off by ...
0
votes
0answers
53 views

Information about the “dot attack” to email servers

I have an email server working for about 1 year. I usually look logs to see what crackers try and find possible security issues. I have received several times a strange attack that I do not ...
2
votes
2answers
127 views

postfix sending mails to unknown addresses

I was checking my munin tables and saw a huge list of deferred mails in postfix and looking into /var/log/mail.log gave me an idea: I am sending mails to unknown mail addresses: Dec 23 08:21:32 ...
2
votes
1answer
59 views

I'm getting 500s while LIMIT / block http POST request w/ Apache(

I'm trying to use core - Apache HTTP Server's <LIMIT> Directive to limit spamers from doing POST's to my website(s): <Limit POST> Order deny,allow Include ...
1
vote
1answer
36 views

How to solve gmail spam filter issue

We have a problem when sending emails to "gmail.com" domain. All of our emails end up in spam folder. We do not send spam or bulk emails, so I would like to know is there a way to solve this issue. ...
65
votes
9answers
18k views

How to stop people from using my domain to send spam? [duplicate]

I receive Mailer Daemon messages saying certain emails fail. My domain is itaccess.org which is administered by Google apps. Is there any way I can identify who is sending emails from my domain, and ...
1
vote
1answer
625 views

Postfix block senders outside from local domains

I would like to block every mail that is coming in from a domain that is running on my server. Example: I have domain1.com on my mail server and I'm getting a mail from outside with an email address ...
1
vote
1answer
661 views

Gmail sends bulk messages sent by postfix to spam - spf, rDNS are set up (headers inside) [duplicate]

here are the headers of the blocked messages (actual domain replaced with domain.com, ip address with n.n.n.n and gmail account name with person.account): Delivered-To: person.name@gmail.com ...
1
vote
0answers
56 views

Prevent spam being forwarded by Postfix (while locally delivered to a Junk folder)

We have a pretty standard Postfix/Amavis setup where we use the Dovecot LDA to deliver mail locally. Amavis passed spam mail and we use Sieve to drop it in the Junk folder of the user. The problem is ...
0
votes
0answers
34 views

Spamassassin internal DNS resolution?

Short Version: Is it possible to configure spamassassin to perform its own recursive DNS lookups instead of using the server specified by the OS? Long Version: I've got a collection of dedicated ...
4
votes
4answers
2k 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 ...
-1
votes
1answer
161 views

sieve in dovecot is not filtering spam message

In Centos 6.4 i use postfix with LDA Dovecot and webmail squiremail, amavis-new with spamassassin. Spam is marked with subject Spam. I want in my squirelmail to filter spam messages an move in to ...
1
vote
3answers
217 views

Comment Spam crashing Mediatemple dv Server

I have a dv (Dedicated Virtual) server at Mediatemple where I am hosting over 700 Wordpress blogs. Lately I have been facing a problem with comment spam wherein my the server memory utilization shoots ...
0
votes
2answers
998 views

Server compromised. Bounce message contains many email addresses message was not sent to

This is not a dupe. Please read and understand the issue before marking this as a duplicate question that has been answered already. Several customers are reporting bounce messages like the one ...
0
votes
1answer
73 views

Strange emails in maillog, can't understand meaning

So i've been fighting spam being sent from our server for the past week. We constantly get listed on CBL with rDNS setup and DKIM signatures. While monitoring the maillog i noticed the following: ...
0
votes
0answers
34 views

Information to keep in a spam black/whitelist

Assuming that I want to black/whitelist specific messages as spam/not spam, what message/sender info should I collect in that blocklist? The address will be most likely faked so I assume the 2 ...
-3
votes
1answer
83 views

Google-style “Your network is generating too much traffic” bounce for postfix

I'm being attacked from a botnet and I found out about it because I got this email from mailer-daemon telling me there's no space left on device. The mail.log was filled up with messages like Dec 5 ...
0
votes
0answers
18 views

OS X Server Mail Forwarding Spam

In Server.app 3, managing a Mavericks server install, under the Users tab, when I select a user, click the settings cog, then click Edit Mail Options. I have a user setup with Mail should be: ...
0
votes
1answer
42 views

View all spam for domain in mailcleaner

I have the community edition of MailCleaner. Is it possible to view all messages that were marked as spam from the admin website or cli? I see the /admin/managespamquarantine and ...
1
vote
0answers
34 views

Whose DKIM signature to use, my own or Amazon SES'?

I have OpenDKIM properly set up to sign emails from my domain such that when sent through Amazon SES, Yahoo Mail shows dkim=pass. Given I got the infrastructure working, is there any benefit to ...
-2
votes
1answer
67 views

On my Amazon EC2 instance for a school project. I tracked visitor IPs and within 5 minutes an IP linked to cnn-noc.net (Huawei/China Netcom) appeared [closed]

I'm not sure if there are any rules here regarding posting specific IP addresses so I will take the address down if necessary. As aforementioned, I put up an IP tracker on my Amazon EC2 instance for ...
0
votes
3answers
84 views

postfix sending newsletters as spam to the receivers [duplicate]

Hej Guys, I have some problems with my postfix setup. We send newsletter regulaly to our customers once or twice a week. and we have expierenced that many customers do not get their emails, it's ...
3
votes
1answer
59 views

Silently drop OUTGOING mails to us.er.n.a.me@gmail.com (more than 3 dots in username part)

With postfix-2.6.6-2.2.el6_1.x86_64 on CentOS 6.4 is there please a way to inspect OUTGOING mails and silently drop them (i.e. do not send them) if the recipient looks like us.er.n.a.me@gmail.com ...
0
votes
1answer
58 views

Exchange 2007: User/Computer Sending SPAM

This question is an extension in some ways of this one: Exchange 2007 server send out spam We're running Exchange 2007. We have an end user who received an Exchange bounce back (generating server is ...
1
vote
1answer
72 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. ...
0
votes
0answers
31 views

How to prevent spam from authenticated users on the internet to be sent out from Exchange 2003?

From time to time, a 2003 server starts dumping huge amounts of email to the internet. When this happens, I stop the service and clear all the spam and put it back online, however, the damage is ...
0
votes
0answers
65 views

trace security hole for culprit random “post” mail files

Running a shared cpanel server with so many layers of security, but somehow someone is able to upload randomly named files with post, spamming out from random users on the box. Examples <?php if ...
0
votes
1answer
111 views

Postfix: mail going to spam [duplicate]

All emails I send from my new server go to spam in Gmail (and sometimes yahoo). I've never before sent out mass email or spam. What I've already done: Configured reverse DNS Enabled DKIM Verified ...
0
votes
3answers
5k views

How do I lock down Exchange 2007 to accept email from a specific range of IP addresses only?

I have implemented a new Exchange 2007 server running on Server 2008 in our domain. We previously used Exchange 2003 running on Server 2003 and I had locked the Default SMTP Connector down so that it ...
8
votes
9answers
6k views

My EC2 instance's email is being spam blocked by gmail

I'm not sure what to do about this. When on a different IP (the same server set up, domain etc), we had no problems with email deliverability. Since transferring to EC2, despite having the AWS imposed ...
0
votes
2answers
50 views

Which steps are required to avoid my server being considered as spam sender?

I'm looking to set up a webmail server that will be used by a lots of users that will receive and send emails. They will also have the possibility to forward emails they receive. I'd like to know ...
-1
votes
1answer
60 views

Mountain Lion Server reject spam

On Snow Leopard and Lion server there was a filter option to reject (bounce) unwanted spam. With Mountain Lion Server the filtering still works, but it only gets flagged as spam with *** JUNK MAIL ...
6
votes
4answers
685 views

Why does my mail get marked as spam?

I Have the server "afspraakmanager.be". It matches everything not to be a spam server.(it isn't by the way): it has reverse dns, spf,dkim,... . But hotmail marks it as spam. I think the problem is ...
1
vote
1answer
126 views

Email Delivery to Gmail Breaks After Implementing DomainKey

I have a personal VPS that I use as a personal email and web server. Today I was diagnosing email, and I created a test account at Gmail. At first I was not implemented DomainKey and only SPF was ...
-2
votes
2answers
335 views

Emails safely reaching spam bin

I started an emailing server. My emails are directly sent to Gmail, Yahoo, AOL & HotMail's spam bin. I can't understand how to fix my errors. I tried sending email to Hotmail which was marked as ...
0
votes
1answer
57 views

Prevent server beeing flooded with requests

I'm hosting a Wordpress-blog on an Apache server (shared hosting). For some reasons I've been receiving like 100 requests per second to xmlrpc.php for a few days. The access.log looks like this: ... ...
0
votes
1answer
42 views

How to block mails from a server in gmail

I am getting mails daily from different mail address like ry8029@fastmail.fm ry1532@outlook.com etc. Since , the mail Id is changing daily , I can't filter those mails. I checked that ...
1
vote
3answers
300 views

Clean out a large MediaWiki text table

I just discovered that an old MediaWiki of mine was infested with spam, and the database table named "text" (which contains the page content) is 3GB large. I've deleted all the spam pages manually, ...
0
votes
1answer
176 views

SPF + ISP Smarthost, always untrusted?

One of the ways mail-servers protect themselves from spam is by SPF-records, a DNS look-up saying what ip-adresses are allowed to send mail from a given domain name. Another way the mail-servers use ...
0
votes
3answers
40 views

Using another mailserver and domain because of spam status

A customer (customer.com) kind of abused a mailing service (iContact) by sending to much promotions. They used their main email as sender (info@costumer.com). Because of that action, hotmail banned ...