All Questions
Tagged with spam-prevention postfix
26
questions
0
votes
2
answers
4k
views
How do I block Postfix from sending spam?
My postfix is sending spam from a [email protected] address. How is this possible and how do I allow only www-data@localhost to send and postfix to only deliver from [email protected] to ...
- 51
0
votes
1
answer
47
views
Avoiding Mail Server Inconvenience
We run our own web server (Apache on Ubuntu) for a bunch of non-commercial websites, but there was no mail transfer agent installed on it, since they are complex to configure and maintain. You need to ...
- 814
0
votes
0
answers
736
views
Detect spambot on ubuntu 12 TLS
Recently I discovered in my mail log that there is an enormous amount of spam being sent from my home server. I am running no websites, just zpanel. I closed down all the ports and am monitoring the ...
- 1,021
0
votes
1
answer
662
views
Strange emails in postfix queue
Currently I am not sending any emails, I have postfix and dovecot installed but in the in the postfix mail queue I see strange emails almost every minute, i dont know from where is this spam ...
- 252
0
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0
answers
169
views
Local SMTP Server — prevent spam flag?
I opened up port 25 on my router, so now I can use sendmail to send email.
However, the emails I send are being marked as spam by my personal gmail account (understandably). The "from" field defaults ...
- 273
1
vote
1
answer
1k
views
Postfix is Sending Spam [closed]
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 ...
- 474
0
votes
1
answer
125
views
DKIM configuration on Debian
Due to the fact that many e-mails we send with our company address do not get delivered, rejected or marked as spam, I searched for a solution on the web.
One of the solutions I found was to use DKIM ...
- 279
1
vote
0
answers
476
views
Configure Ubuntu Server VPS to send mail without going to spam
I have installed and configured Postfix on a VPS.
I have managed to get it so I can send and receive mail.
However every time I send mail from It, it get's marked as spam and was wondering how I ...
- 111
9
votes
2
answers
3k
views
How do I enable DKIM for bounce messages in Postfix
I have set up a linux email server with Postfix and have correctly set up SPF and DKIM. When I send an email, the email is signed properly, and when I view the source from the receiving client (such ...
- 628
1
vote
1
answer
663
views
postfix: block mails to a specific and non existent mail address
How could I block mail to an incoming address that spammers are hammering via postfix? I have a webmin interface to postfix, so if this can be done via webmin interface that would be great.
- 1,129
3
votes
1
answer
2k
views
Securing smtp with login
I have a ispconfig server, and it seems that someone is using it to send spam. I got about 130 "Mail Delivery System" emails about declined send email.
This spammer uses my email address as sent from ...
- 209