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

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0
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1answer
280 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
84 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
566 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
158 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
189 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
305 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
132 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
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0answers
41 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
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1answer
306 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
1answer
55 views

Simulating spam request?

I'm trying to test out some blacklist directives that I've just implemented., Is there a way to simulate spam requests?
2
votes
2answers
759 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
108 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
260 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 ...
2
votes
1answer
155 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
60 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
128 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
45 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
138 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
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1answer
168 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
136 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
96 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
221 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 ...
4
votes
1answer
185 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
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1answer
99 views

Disable open-relay in exchange 2003 behind NAT

I have an exchange 2003 which is authoritative for my only one domain. It's in my DMZ and NAT'ed. I am an open relay, sending thousands of spams. I want to stop it but I still want to receive email ...
0
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1answer
196 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
106 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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1answer
239 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
2answers
85 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
118 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
2k 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 ...
0
votes
1answer
240 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
48 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 ...
0
votes
1answer
441 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
58 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 ...
1
vote
1answer
175 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 ...
3
votes
2answers
1k views

Mail sent to gmail goes directly into spam

First I would like to state I already searched through the database for similar questions to mine. Tried all of those suggestions but none really seem to work. The problem is the following: I ...
2
votes
1answer
79 views

What to do with a denounced IP?

I have a VPS and I use it as a personal email and web server. Although there are some other domains hosted on it, the number is less than 5. From the start, I wasn't able to send emails to Gmail or ...
0
votes
1answer
175 views

What will be the SPF entry in DNS?

We are using magento on our server. Magento sent transactional emails directly from our server using php mail function, along with this we are using third party webmail service. Means our mx entry ...
0
votes
1answer
76 views

Locating malware on network

I am trying to isolate an email sending malware on my network. The headers are as follows: Received: from z.local.domain (172.18.248.22) by z.local.domain (172.18.248.22) with Microsoft SMTP Server ...
1
vote
2answers
296 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 ...
0
votes
1answer
41 views

Postfix mail server taken over by spammers following update of environment despte countermeasures

Long configured, stable Postfix mail server on internal system with greylisting, a long list of restrictions and real-time black-listing, reachable through a gateway / firewall via forwarded port ...
0
votes
1answer
118 views

Can't deliver emails to microsoft

I have a postfix server, on Ubuntu 13.04. On my domain, I set up correctly every MX, SFP, DKIM and A record. I've tested them with gmail, reports DKIM and SPF PASSED. So no problems, my mails comes ...
0
votes
1answer
72 views

Spamming from Exchange 2003

I am apparently spamming the world (about 1000 a day) but cannot figure out how. Mxtoolbox does not list me as an open relay and I have disabled all relays that I can find. I have run every virus ...
1
vote
1answer
134 views

Mails marked as spam in gmail for some accounts

I have a couple of domains running on my VPS with VirtualMin. I have DKIM enabled, reverse DNS is setup and SPF records are added by Virtualmin. Now I have a main account (admin) which I can easily ...
-1
votes
1answer
432 views

Spam Filters - Why does the same message fail via one smtp server but not the other?

I have a PHPMailer script sending email. If sent via postfix localhost it is marked as spam with these headers. Delivered-To: xxxx Received: by 10.58.210.166 with SMTP id mv6csp82473vec; Sun, ...
6
votes
4answers
1k views

How can I block outside mail FROM postmaster@mydomain.com?

A security firm has been testing my mail server and claims my Postfix daemon is an open relay. The evidence is as follows (valid public IP for mail.mydomain.com has been changed to 10.1.1.1 for ...
-1
votes
2answers
311 views

Server sending out SPAM [duplicate]

Update: It does seem as the server is not compromised, but is used as relay server. Now I'm trying to figure out how to disable this. I have server running Ubuntu 12.04 LTS with several domains ...
-1
votes
1answer
657 views

sendmail - Server Sending Spam? [duplicate]

for the past day my server is being used to send a spam. I'm using the Amazon Linux Distro (RedHat based). It has sendmail 8.14.4. It is setup to require authentication, SSL etc. Below are some ...
0
votes
2answers
159 views

Postfix spam flood from my network

I have some issues with my postfix server. Recently it started sending spams, but only in my local network, since open relay has been closed, only allow to my network. I've tried a lot of solutions ...
0
votes
1answer
3k views

Can message go to spam because of X-AUTH and X-SID fail on hotmail [duplicate]

When email with header as below comes to hotmail, it is put into spam folder. May be this is because of X-AUTH-Result: FAIL or X-SID-Result: FAIL? Or maybe the reason is different?How can I fix this? ...