All Questions
33
questions
2
votes
1
answer
216
views
"Non-Open-Mail Relay" Postfix / Dovecot are relaying anyway; Mis-configured or CRACKED? Plus, presently blocked external users need access too
CRITICAL UPDATE
While working on this, there'd been no spam relayed for over a single day so I left it up and overnight, TWO emails got relayed! ACK!
Here they are, from my tail / grep commands (...
- 1,298
-1
votes
1
answer
37
views
Long established Postfix / Dovecot environ had to be rebuilt, became an open relay; How do I know fore sure it's fixed, and, if not, fix it fast?
Because it's bad form here to ask multiple questions in ONE entry, I'll be asking about specific Postfix and Dovecot entries, however this nightmare has been going on since about January 19 and it's ...
- 1,298
0
votes
0
answers
268
views
Postfix Maildrop Directory Generating Unsolicited Email
I have recently set up up a Postfix Mail Server on Ubuntu 20.04. This server is used mainly to relay messages from authenticated users to the outside world. This is so applications such as payroll ...
0
votes
1
answer
592
views
What to do if a specific postfix/dovecot user's account is hacked and being used to send spam?
I'm running a postfix/dovecot mail server. This morning, I discovered it was unresponsive. Turned out, /var/log was full. It appears one of the users has had their account hacked and it's being used ...
- 419
1
vote
2
answers
906
views
Postfix does not retry after 451 error / greylisting
I have a forwarding server using postfix/dovecot that receives emails from a third party mail client (say gmail) and forwards the emails to the final recipient.
I have noticed that when the recipient ...
- 169
1
vote
1
answer
535
views
Emails going to spam even though DKIM and SPF records set up and rDNS too in EC2. I am usinf postfix and dovecot [duplicate]
I have set up my own email server in AWS using postfix and dovecot. I have also set up DKIP and SPF and DMARC records. Now the problem is when i send an email from [email protected], its not flagged ...
- 149
0
votes
1
answer
465
views
Something sends emails to [email protected] permanently
I'm watching multiple lines in maillog for the last few days
Feb 26 06:00:17 d3355 sm-mta[2682]: x1L5tNWu013205: to=<[email protected]>, delay=4+21:04:54, xdelay=00:00:00, mailer=esmtp, pri=...
- 175
0
votes
1
answer
913
views
How do I teach spam and ham to spamassassin running in a docker container?
I'm running SpamAssassin as a milter in a Docker container separate from Postfix and Dovecot. Postfix and SA work together nicely, Postfix connects to spamass-milter, SA does its thing, mail gets ...
- 279
4
votes
3
answers
5k
views
Dovecot imap send spam to junk
I am using
Ubuntu 18.04 64 bit
dovecot 2.2.33.2
spamassassin 3.4.1
amavisd
The goal is to run an e-mail server, which I achieved already. I can access the e-mails at the server using Thunderbird ...
- 41
1
vote
1
answer
291
views
Mail Server allow sending spam to hosted mailboxes
I got an issue on both of my servers (Postfix + Dovecot and one on Zimbra)
My issue is some robots send spam without login to our hosted mailboxes using the same FROM/RCPT.
It seems Google got the ...
- 297
0
votes
0
answers
251
views
Dovecot SpamAssassin results different than standalone
I'm trying to filter spam with smtpd, spampd, dovecot, and SpamAssassin, and I'm finding different results of a spam email between the X-Spam-Report added by spampd/dovecot (which scores low) versus a ...
- 225
2
votes
1
answer
2k
views
Arch Linux: Dovecot Sieve Script Won’t Compile
Arch Linux
Linux kernel 4.9.36 (64-bit)
Dovecot 2.2.31 (65cde28)
SpamAssassin version 3.4.1 running on Perl version 5.26.0
Pigeonhole 0.4.19-1
Trying to set up a mail server for the firs by following ...
- 255
1
vote
0
answers
464
views
Postfix - do not bounce on quota exceeded (account behind alias)
I'm trying to solve problem with some blackscatter-like attacks, when spammer send email with real person From or Reply-To address to an account with quota exceeded.
This situation previously ...
- 226
4
votes
1
answer
4k
views
SpamAssassin sendmail permission denied with Postfix
My server worked, but I installed SpamAssassin using a tutorial from Digital Ocean.
Here is my /etc/default/spamassassin:
# /etc/default/spamassassin
# Duncan Findlay
# WARNING: please read README....
- 55
1
vote
0
answers
12
views
Prevent email ending in spam-folders [duplicate]
I have been using this dockerized mailserver to set up a mailserver and webmail for my company.
I have followed all official instructions in order to avoid emails ending in spam-folders:
...
- 1,597
0
votes
1
answer
505
views
Mail sent by Postfix / Dovecot setup going into spam folder
I am running a Debian 8 VPS for a couple of months now. I running several services, including a mailserver with Postfix and Dovecot.
As far as I can tell, I have everything set up correctly.
My IP is ...
- 171
0
votes
2
answers
148
views
Someone sending email through my Postfix/Dove
there might have been answers to this many times. But I can't seem to find one that fits my issues so here we go:
I've ran an email server on my centos machine for over four months without problem, ...
- 16
1
vote
1
answer
91
views
Postfix Hostname domainbased
I would like to excuse in advance, if my question has already been answered before but im going crazy since a week now...
I'm not new to this but after a while in another job, my "skills" are totally ...
- 11
0
votes
1
answer
3k
views
Postfix Localhost Server Sending Spam to Itself
I have an iRedMail server that runs Postfix and am trying to determine the source of its spam problem.
I have since changed the MX records on the domain for the address receiving spam and the good ...
- 217
1
vote
1
answer
3k
views
SpamAssassin with dovecot-antispam training
I'm trying to get dovecot-antispam working with SpamAssassin' sa-learn. This is my Dovecot configuration:
antispam_backend = pipe
antispam_trash = trash;Trash;Deleted Items; Deleted Messages
...
- 404
2
votes
2
answers
3k
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: <[email protected]>
X-...
- 45
1
vote
1
answer
1k
views
Postfix message ID originating process?
Last night my postfix mail server(Debian Squeeze with dovecot, roundcube, opendkim and spamassassin enabled) started sending out spam from a single domain of mine like these:
$cat mail.log|grep ...
1
vote
1
answer
962
views
Server sending spam - how to find out why?
I have a CentOS 6 on a dedicated server. I'm the only one with shell access to it.
I host 2 Wordpress and few simple PHP sites there. My hosting company just emailed me that they blocked my port 25 as ...
- 805
1
vote
2
answers
6k
views
Postfix and Dovecot Sieve spam filter does not work
CentOS 6.5 x64
I'm trying to apply a Sieve filter to my mailserver (Postfix + Dovecot + Spamassassin) to automatically move spam mails to my Junk folder.
I've added sieve to my /etc/dovecot/dovecot....
- 196
3
votes
2
answers
3k
views
Postfix sends email to spam (gmail, hotmail)
I recently installed a postfix + dovecot + dkim multi domain, multi user, multi alias mail server on my debian squeeze system. Everything works except for one big issue that basically makes the whole ...
- 131
-1
votes
1
answer
207
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 ***....
- 153
-1
votes
1
answer
2k
views
sieve in dovecot is not filtering spam message
In Centos 6.4 i use postfix with LDA Dovecot and webmail squiremail, amavis-new with spamassassin. Spam is marked with subject Spam. I want in my squirelmail to filter spam messages an move in to ...
- 241
1
vote
1
answer
607
views
Dovecot Forward Spam
I was wondering if anyone had any knowledge on how this idea can be done. It's not a requirement but more of an idea I came up with that I don't know how to word my google searches to find out if it's ...
- 189
0
votes
1
answer
642
views
Emails from server going to junk/spam in Outlook and Gmail [duplicate]
Althought I have setup my rDNS correctly and have SPF and DomainKeys setup on my cPanel server I'm still getting all emails sent from our mailserver to spam, unless the domain is whitelisted by the ...
- 25
2
votes
2
answers
232
views
Fixing Poor Email
I'm having an issue with SenderBase. My IPs are not blocked in any BLs but people who use SenderBase/Ciscos stuff do not get my emails. Is this because my email system is setup poorly?
They list the ...
- 6,691
2
votes
1
answer
937
views
User-trainable spam filtering with Exim and Dovecot
Currently I'm using Exim to deliver mails via dovecot-lda into Dovecot mailboxes. I'd like to add spam filtering, but I don't want to reject false-positives in Exim, and I want to train the bayesian ...
- 221
-2
votes
1
answer
423
views
How to pass SPAM filters? [duplicate]
I just configured Postfix and Dovecot, I can send and receive emails. At the moment I have a problem with Hotmail, all my email are saved on the SPAM folder. My MX has few days, maybe they will ...
- 1
0
votes
1
answer
302
views
Debian Server with Postfix and Dovecot + Spam Management
I currently have an email account that receives TONS of spam because currently I have no filter setup. Is there any way of going through that spam that I am receiving and setup a filter off those ...
- 101