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

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38 views

SPF record validation is pass but email is rejected by server [duplicate]

I have SMTP on a windows 2008 server with IIS6. The SPF recored is passed when I send emails to hotmail or gmail but it gets rejected on other servers claiming that there is problems with the SPF. ...
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1answer
64 views

what user is sending emails from mailq

I have a debian box with postfix on it. I checked the mailq and I do not understand how to read the mailq. I need to know witch user is used to send this emails. here is a example 0F87797868C ...
2
votes
1answer
65 views

How easy is it to sniff the SMTP port of webserver to capture mails

I've got a very basic question that I don't know the answer for. Our company owns a webserver that runs multiple websites and works as a mail server for these websites as well (e.g. to send contact ...
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0answers
26 views

Spam - openrelays using our email addresses

Folks, I'm getting into trouble with spam filters on the internet. Our own email addresses are being used by spammers and replies are being sent back to us with notification about addition to ...
2
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0answers
43 views

nginx - Tips to fight spam [closed]

Can someone suggest best NGINX practices to limit spam requests? Currently what I do is maintain blockips.conf file in which I deny spammer IPs. Are there any better alternatives I can go with.
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1answer
161 views

hMail delivery queue full with unsuccesfull spam

Since a day or two the mail delivery queue of the hMailServer is exploding because someone is trying to send spam via this server. Though the e-mails aren't successfully sent it fills up the mail ...
0
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1answer
65 views

Mail server is seen under different IP by other mail servers, than it has --> mail marked as spam

I am experiencing problems with delivering emails from my server and can't see the real cause of this problem. Emails from my mail server are marked as spam. In message sourcecode I can see, that my ...
0
votes
2answers
64 views

Dealing with Apache spam

I am recieving a lot of suspicious requests which cause Apache to use a lot of memory (over 1GB) [Mon Feb 24 09:48:29 2014] [error] [client 120.37.238.125] PHP Fatal error: Allowed memory size of ...
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0answers
16 views

Server sending spam [duplicate]

There is a part of my exim_mainlog. As you can see and send emails every second. How can i stop it? I even suspend thenimb.com, it didn't help. I use exim. 014-02-20 18:20:48 1WGXIl-00010f-L6 ** ...
2
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0answers
200 views

How to stop double-bounce FROM sender in postfix

I am getting huge amount of these in my mail log, and unable to find its originator. What could be the reason? Here is log entry: postfix/cleanup[9626]: 4413082E40: ...
0
votes
2answers
30 views

Marking emails with DKIM - safe?

Im running an email server as part of a research study. We have subjects connecting and sending email from a variety of clients. One function of this server is to communicate with said subjects - ...
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0answers
33 views

How do I get Ingo to provide sieve rules suitable for use with DSPAM?

Using the Ingo web gui which is part of horde, I can set up sieve rules that get written to file like so: # Junk-Review if header :comparator "i;ascii-casemap" :regex "X-DSPAM-confidence" ...
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1answer
33 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 ...
0
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1answer
133 views

hMailServer forwarding and distribution lists with SPF checking

I have installed and configured hMailServer, primarily to allow me to create a distribution list for a private organisation, and some email address aliases. This is so that members of the ...
0
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0answers
78 views

Amavis log clean passed mails to mail.log

I use amavis on my Ubuntu host to scan emails for spam. Unfortunately amavis log all clean passed mails to the 'mail.err' and the 'mail.log'. How to prevent the 'mail.err' logging? mail.err example ...
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1answer
15 views

Can I check 'mailq' with vzctl from node?

Can I check 'mailq' with vzctl from node? I need to find out if VPS owner from one node sends SPAM messages. Any other way to check if VPS client sends SPAM ?
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0answers
59 views

How do you view quarantined mailbox on Microsoft Exchange 2010?

When certain emails are quarantined for high spam scores, exchange sends a default email to the recipient stating that the email was quarantined for x reason. How do you view the quarantined emails? I ...
1
vote
3answers
522 views

Sendmail: Sender address rejected (Domain not found)

I'm running into problems with sending mail on our webserver. Some mails are sent and delivered without any problems (eg Gmail), while others are deferred with "Sender address rejected: Domain not ...
0
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2answers
112 views

How to remove all messages from exim mail queue from a certain user/email

I've spend the last hour trying to figure out how to delete all messages from a certain mail address from the exim mail queue, after the queue was full of spam emails.
3
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4answers
163 views

Spamming from my Linux server

Hi I was wondering if anyone could help. I got a email from my host company that there are some weird traffic coming from my server. A quick look into the log file revealed the sample log below. There ...
-5
votes
2answers
214 views

Our exchange server is sending out a lot of spam [closed]

We have an exchange server 2003 and our IP address was blacklisted. When I check the Queue folder in the exchange server root directory, there are tons of Delivery Status Notification (Delay/Failure) ...
0
votes
1answer
62 views

How can Sendmail reject email to a local user *unless* it comes from a trusted subnet?

I have sendmail set up to accept mail for a few domains and to relay messages for a few subnets' worth of systems. Recently a particular internal-use-only address has been receiving a lot of spam. ...
0
votes
1answer
119 views

What do I need to be able to send mass SMTP email efficiently? [closed]

I am creating a web application that allows users to send broadcast emails to a list of subscribers. Essentially, it's a mass emailer and autoresponder, like AWeber or Constant Contact or MailChimp. ...
1
vote
2answers
78 views

Listed on spamcop.bl.net - why?

I entered our mailserver IP and got this report: In the past 5.4 days, it has been listed 3 times for a total of 3.6 days How would I go about determining what caused my server to get flagged? Does ...
1
vote
1answer
153 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
64 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 ?
0
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1answer
94 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 ...
10
votes
1answer
207 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
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1answer
53 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 ...
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0answers
21 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
124 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 ...
0
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0answers
67 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
275 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 ...
1
vote
1answer
47 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. ...
2
votes
1answer
84 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
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0answers
77 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
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0answers
43 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 ...
0
votes
1answer
83 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: ...
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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 ...
0
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0answers
20 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: ...
-3
votes
1answer
96 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
1answer
67 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
1answer
63 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
78 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
144 views

postfix sending newsletters as spam to the receivers [duplicate]

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 simply because ...
3
votes
1answer
88 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 ...
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1answer
90 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
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1answer
85 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
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0answers
50 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
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0answers
85 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 ...