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Server Fault Stack Exchange

Questions tagged [spam]

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

Spam can refer to:

  • Junk e-mail
  • Unwanted posts on a website
  • Unwanted comments on a post on a website
  • A large number of posts designed to crash a system rather than provide useful content

For our canonical Q&A about how to prevent email you send from being flagged as spam, see How to send emails and avoid them being classified as spam?.

1396 questions
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Too many sendmail instances in “top” command

I got a server with mysql+php running on it only. Cronned PHP scripts (not available publicly) send occasionally emails, but not more than 10 per hour. However, whenever I type "top" in bash I see something like this: top - 00:44:33 up 13 days,…
captain lizard
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1 answer

Exchange Server Spam Protection

I took over an exchange 2010 server on what I believe is a Hyper V Virtual Machine, running Windows Server 2008. We have a SonicWALL firewall, but the majority of the licensing on the firewall is no longer paid for (I think it's minimal spam…
TheFrack
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1 answer

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], version=TLSv1/SSLv3, verify=FAIL, cipher=AES128-SHA, bits=128/128 Sep…
Greg
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1 answer

Sometimes this script fails to update the iptables

It does not happen often, but sometimes after running the below script, checking the iptables with service iptables status shows that they weren't updated and the script doesn't output any error. The iptables is structured as look-up tree (long…
AlJo
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2 answers

GMail detecting mail as spam

I've been trying for a long time to get our company's mail server send mail that will get accepted by the GMail spam filter. I have managed making it work for Yahoo Mail and Hotmail, sadly GMail is still marking our mails as spam. I have configured…
Petru Toader
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1 answer

Can't figure out how to properly setup SPF record

I have a Django web app and I use Django's email backend to send out emails. I can't figure out why emails are ending up in spam folder. My domain host is GoDaddy so I added a TXT record *.example.com TXT v=spf1 a ~all This is the header of emails,…
sql-noob
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mail server Best practices PTR and SPF

I have 2 domain names in my server : domain1.com is the main domain that I am using as a nameserver (ns1.domain1.com and ns2.domain1.com) and domain2.com (I am using it to host my web application and sending emails for my web application using…
saad
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7 answers

What would it take to fix email?

Maybe I'm on my own on this one, but email as a whole seems to be a disaster. Spam accounts for around 9 in 10 emails that are sent, and a lot of resources both human and electronic are spent on dealing with it and the problems it causes. It's not…
Zimmy-DUB-Zongy-Zong-DUBBY
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How to find the source of outgoing SPAM emails on my Server

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 queue 29 May 2014 06:29:00 GMT #13879694 601 …
user221861
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Mail delivery failed for a message I didn't send

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 I am slightly worried someone is using my mail…
Paulo Matos
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1 answer

Postfix user is not allowed to submit mail

I am running a webserver on debian wheezy with postfix and about 3 months ago I had a major spam problem with one my domains with web21 id. I made a fresh wordpress install and everything and the problem was gone for about 3 months and this time…
Johnny
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2 answers

Postfix is Sending Spam

I have an Ubuntu 12.04 server, hosted on AWS, that powers a dozen WordPress installations using Nginx and php5-fpm. The problem just began one day. My server was down. Panic! Whenever I turned it on again, after a few minutes it always died again.…
Ore4444
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1 answer

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 ?
user197692
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2 answers

How to check if I can spam email with my VPS

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 ?
Dzung Nguyen
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1 answer

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 ***. Is there a way to change that setting back to…
Joseph
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