0
votes
1answer
12 views

SpamAssassin filtering by Exim 4 with virtual user preferences

I would like to configure spam filtering with exim's built-in spam filter support in acl_check_data config section. The piping, exim header modification (to store result) works well. As well as ...
-1
votes
1answer
25 views

ColdFusion Server Infected and Sending Thousands of Spam Emails [duplicate]

We've been having a big problem with our Coldfusion 9 server sending spam emails in large amounts . . so i tried looking at the logs hoping i would find clues as to what the problem is and so: here ...
-2
votes
0answers
10 views

Email sender , receiver, provider how to avoid Blacklist

I am wondering, let's make an example, i am Mario on site.com i want to invite by email Josh from site.com invitation form. So site.com now has to send email from Mario to Josh, how site.com will do ...
0
votes
1answer
20 views

Sendmail's MTA, MDA and SMTP 550 User Unknown forwarded to postmaster

I have two boxes running sendmail and configured as: MTA accepting connections from the outside world (mta.xyz.com) MDA accepting connections from internal network and storing them in user mailboxes ...
-1
votes
1answer
31 views

Configure sendmail to reject emails without from addresses

My MTA is receiving lots of emails with no from address specified, for example: Sep 15 17:09:57 mta1 sm-mta[46864]: STARTTLS=server, relay=mx01.aquila-capital.de [83.236.242.254], ...
1
vote
2answers
146 views

Spamassassin filter systematically produces negative (ham) scores for spam messages

I have problem with lots of spam. My server setup is VPS with CentOS 6.5 and Dovecot+Postfix+Spamassassin. Here is source of one of the messages: Return-Path: <nancy_mitchell@tagbook.co.nz> ...
-3
votes
1answer
40 views

Sending emails on behalf of our clients

We wan't to send emails on behalf of one our customer. Previously we were sending those emails using our email address. But last two times we got blacklisted in SORBS database (probably because of one ...
-6
votes
1answer
40 views

Automated blacklist checker [closed]

Has anyone used any of these services and if so, is there one you can recommend? Ideal target would be for an MSP so perhaps would like real time alerts if an IP shows up on blacklist for perhaps ...
-2
votes
1answer
24 views

spam email forwarding by server [closed]

Let's start with this scenario: We have a mailbox (i.e. in yahoo), every message is sent by this account, marked as spam by Gmail spam filter. (because the address or sender IP is blacklisted, ...
0
votes
1answer
67 views

Postfix acting as spam server. Looks like it's part of a botnet, spam messages being sent to customers [duplicate]

Let me first start out by saying I am no mail guru. If you need more info to help me just let me know. This week the mail server has been having all sorts of strange issues. It has been duplicating ...
0
votes
1answer
19 views

SpamAssassin doesn't filter forwarded mails

I am forwarding emails from an external email account to an account on my own server. SpamAssassin works fine if I just receive mail normally. But all mail thats being forwarded from my external mail ...
10
votes
2answers
672 views

How can I reduce the damage of stolen mail accounts?

Currently I’m offering some webhosting to a few advertising agencies for their premium customers. But currently I have a great problem with the E-Mail Service. In the last week, the E-Mail Accounts of ...
1
vote
0answers
49 views

Email spam/hack and odd apache logs around the same time

A friend of mine started getting failed delivery notices yesterday (June 23rd, 2014) on all of his domain e-mails, and so he asked me to look into it. I have been looking through various logs and his ...
2
votes
0answers
49 views

Single MailCleaner installation for two distinct domains with user authentication

I would like to use one MailCleaner installation to handle two distinct domains as one centralised spam management system, sharing configuration and mainly the bayesian filtering database. Both ...
7
votes
3answers
2k views

Should I let email bounce or send it to a blackhole?

I have a lot of unused (old, dead) accounts on my machine. Many of them receive literally thousands of emails a day, all spam. If the account was used by a person, I let the email bounce so that ...
0
votes
1answer
116 views

Plesk 12 Linux Server Mail Spam Issue

I'm running multiple websites on my dedicated server, and for one website in particular where users signup and then must verify their email address, I'm getting reports from my client that a small ...
-1
votes
3answers
250 views

Server being used to send spam mail. How do I investigate?

Problem I think my server is being used to send spam with sendmail, I'm getting a lot of mail being queued up that I don't recognize and my mail.log and syslog are getting huge. I've shutdown ...
2
votes
1answer
166 views

How to setup a daily report of the top e-mail senders in Exchange 2010

We have had issues with compromised Exchange accounts sending a large amount of unsolicited e-mails out. We have mitigated this by using a cloud e-mail gateway that does a better job in detecting ...
-2
votes
1answer
117 views

How to find the source of outgoing SPAM emails on my Server [closed]

Hello this is my first time here. I do know a little about linux but I can't seem to find out the source of tons of SPAM emails being sent out on my server. Here is a small portion of the QMAIL ...
-2
votes
1answer
2k views

Mail delivery failed for a message I didn't send [duplicate]

I have started to receive emails with the subject: "Mail delivery failed: returning message to sender" for emails I haven't sent. I host my own mail server at my domain matos-sorge.com (a linode) and ...
0
votes
1answer
54 views

Spam e-mail tracing

I have this issue where I receive on my server admin e-mail failure notices to a lot of e-mails that I or my hosted domains did not send. The machine is an Ubuntu with Plesk 11. For e-mail I use ...
0
votes
1answer
87 views

Project Honeypot says my mail server has become a spammer [duplicate]

I need help diagnosing this: http://www.projecthoneypot.org/ip_66.18.204.186 It says my server has been sending spam for 4 months! I try to be a responsible mail server admin, I hate spam, I do ...
0
votes
0answers
644 views

Exchange 2010 Mail stuck in Queue - HUB Version 15 - Journaling

I have issues with my queue on my Exchange 2010 Hub Transport server. When I do a Get-Queue, I can see over 1000 emails on queue and the next hop is Hub Version 15! I don't have a clue what a Hub ...
1
vote
2answers
53 views

Efficient way to get Postfix talk to SpamAssassin

Traditional methods of doing this on SA wiki talk about shell scripts as content filters. Well that's an additional fork syscall on every email and the volume that will flow through the machine is ...
0
votes
1answer
32 views

Using DKIM in my server for multiple domains (websites)

As I couldn't find this exact tutorial in Stack, I share my findings with al of you. I always get things solved thanks to this comunity. Thanks! Original question: I've read the tutorial posted by ...
0
votes
1answer
655 views

How to resolve problems with spf / softfail?

I'm having problems with Google rejecting mail because of SPF problems. I thought I had this fixed, but evidently not... The mail is being sent from a Drupal site running mimemail. A message that ...
0
votes
1answer
105 views

GMail or Office 365 for small businesses with LOTS of domains [closed]

Sorry if not the right place to ask, I'm pretty new here (mostly post programming questions on SO). I work for a small company, about 5 employees, but we have 5 different domains we use for sending ...
2
votes
2answers
538 views

Is the 10-DNS-lookup limit in the SPF spec typically enforced?

My understanding is that the SPF spec specifies an email receiver shouldn't have to do more than 10 DNS lookups in order to gather all the allowed IPs for a sender. So if an SPF record has ...
0
votes
1answer
70 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 ...
2
votes
1answer
495 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
1answer
225 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 ...
1
vote
3answers
971 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
votes
1answer
87 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
164 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. ...
0
votes
0answers
49 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
96 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
35 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
votes
0answers
26 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: ...
4
votes
1answer
127 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 ...
1
vote
1answer
88 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
1answer
182 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 ...
6
votes
4answers
1k 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
150 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
1answer
78 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
121 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 ...
1
vote
2answers
137 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 ...
-1
votes
2answers
227 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 ...
0
votes
0answers
31 views

Switched google apps domains; now certain emails aren't delivered?

We recently moved from one google apps domain to another, and used Backupify to transfer email accounts, etc. Since then, we've had intermittent issues with customers not receiving emails or having ...
0
votes
1answer
1k 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? ...
1
vote
2answers
118 views

How to properly filter outgoing e-mail?

I have a platform consisting of many web servers doing shared web hosting. These servers run Linux and host tonnes of Wordpress, osCommerce, Joomla and other open source website platforms. Every now ...