All Questions
142 questions
0
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38
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Postfix: send an email with the postmaster account ([email protected])
I have set up a Postfix server on my Ubuntu 24.04 server. It is also running well, but the domain used has suddenly ended up on a domain blacklist from Spamhaus. To request the removal of the ...
- 13
-1
votes
1
answer
82
views
Spamassassin whitelist is not taken into account
I have a postfix / dovecot /roundcube running on a ubuntu 22.04
I have some user which get mail with a false warning on SPAM
=> [***** SPAM 6.2 *****] xxxx
With a score higher than 4 which is ...
- 1
0
votes
0
answers
120
views
Postfix smtp problem
I have a postfix mail server with dovecot. If I send a mail through Gmail smtp (relayhost) the mail is successfully received by the gmail.com server, but if I send mail form Gmail address to my ...
- 1
1
vote
2
answers
563
views
What is `postfix/smtps/smtpd` in my log file?
I know that postfix/smtpd is for incoming mails, smtp for outgoing mails. But I do see in my logfile several entries with postfix/smtps/smtpd. What is this for?
Feb 22 10:57:55 mx postfix/smtps/smtpd[...
- 41
1
vote
1
answer
126
views
/usr/sbin/anacron kills dovecot and postfix
I am running dovecot and postfix on a 22.04.3 LTS Ubuntu server. Every day at 6:25 first the dovecot server and then the Postfix server gets stopped (it started about a month ago). It starts again ...
- 41
0
votes
1
answer
1k
views
Dovecot - imap-login SSL_accept() failed
today i configured Postfix, Dovecot and MySQL from tutorial https://www.digitalocean.com/community/tutorials/how-to-configure-a-mail-server-using-postfix-dovecot-mysql-and-spamassassin
Actual dovecot ...
- 1
1
vote
0
answers
212
views
How to solve Relay access denied error in Postfix
By seeing the mail.log, I see errors like this constantly:
Dec 15 22:11:49 zeus postfix/smtpd[17078]: NOQUEUE: reject: RCPT from unknown[163.247.55.22]: 454 4.7.1 <[email protected]>: ...
- 111
0
votes
1
answer
136
views
Bounce settings not connecting to iredmail server with correct authentication details
I am using a VPS Server, Abuntu 22.04, PHP 7.3 and Interspire Email Marketer (IEM).
The errors below occurs when I set the bounce email (in IEM) the same as it was previously on another VPS server.
...
- 179
0
votes
0
answers
260
views
How to install and send emails with Postfix
I am trying to install Postfix on a server and have it go through a relay. I would like to have the email with a custom domain, so I bought a domain and registered a A record to point to the relayHost'...
0
votes
0
answers
362
views
Ubuntu server mail server
I wanted to ask if you could help me to start my own email server. I followed a tutorial to start my own mail server on my bought domain but something is not working.. I have a server on digital ocean ...
- 31
1
vote
1
answer
570
views
How to migrate a remote mail server without having to notify its users?
I've got a remote mail server(henceforth A), based on this tutorial. Dovecot is the software used as the IMAP/POP3 mail server. I want to migrate every byte in A to another remote server(henceforth B),...
- 31
0
votes
0
answers
137
views
Why do mail clients try to access my UBUNTU 20.04 Postfix (v3.4.13) outgoing mail server
I run a private mail server, however it is found by non associated mail clients that try to access the outgoing server smtp ports. Why and how does this happen? Is it hackers that look for machines ...
- 1
0
votes
0
answers
177
views
Slow email receiver in postfix configured on Ubuntu
We are sending emails to destinations and the email traffic is high but recipient server is not accepting all emails due to their security rules and source emails can't be restricted.
How to deal or ...
- 1
0
votes
0
answers
505
views
root mail - postfix, etc
for reasons that I cannot seem to divine, my postfix keeps trying to deliver messages to root to root@[MyISP].com, which of course is getting rejected as invalid username by the SMTP gateway at [MyISP]...
- 469
0
votes
0
answers
149
views
Setting up Mail Server for multiple domains mapped to different ip addresses
We have taken dedicated hosting and using it for hosting multiple domains.
The different domains are mapped to different ip addresses.
for example
example1.com mapped to 1.0.0.1
and
example2.com ...
0
votes
1
answer
1k
views
Is my postfix mail configuration correct? (Emails aren't being received) [closed]
I'm very much a linux noob and greatly appreciate any help and patience you can provide.
I'm running Ubuntu 21.04
Email setup instructions from web host:
I'm trying to setup mail to be sent via ...
0
votes
0
answers
192
views
Server won't receive emails from Instagram
I am having issues receiving emails from instagram to my server domain.
The email works fine (to and from) everywhere else.
Facebook also wouldn't send to a different email using the same domain.
Any ...
- 179
0
votes
1
answer
257
views
help configuring rspamd to be used from remote postfix
Good day!
my postfix is in different host from my dovecot and rspamd, and everytime a mail comes the postfix will deliver it to my dovecot. Now I am having a hard time configuring my postfix to use ...
- 151
4
votes
2
answers
5k
views
Send email via gmail, without other mail server, with postfix
I am inexperienced in configuring mail systems.
I am using Ubuntu #54~20.04.1-Ubuntu.
How can I configure my computer to send emails using a gmail account, with postfix?
I mean not to have any other ...
0
votes
0
answers
228
views
I created a mail server using postfix and dovecot on ubuntu 20.04 but my mail goes to spam
I created a mail server using postfix and dovecot on ubuntu 20.04. I'm using a valid trusted SSL certificate from let's encrypt, but my mail goes to spam on Gmail and other mail services. I'm sending ...
0
votes
1
answer
112
views
rsync log file gets corrupted when using nano editor or mail ( postfix ) command
I have a strange situation where I am re-directing the whole output of an rsync command to a file and the file gets corrupted if I open it with nano editor or if I send the output to outlook mail.
If ...
- 133
0
votes
1
answer
4k
views
Postfix Send-Only SMTP Server domain name configuration
I found 2 ways of sending mails from Linux/bash :
through a service , like sSMTP, which implies using an external SMTP server, like gmail
through Postfix server, which configures the Linux server to ...
- 133
0
votes
0
answers
3k
views
Opendkim Key Not Secure
Ubuntu 20, cannot get opendkim-testkey to pass for the life of me. Checked all dependencies, configs numerous times, any help appreciated.
--------------------------------------------------------------...
- 1
0
votes
1
answer
202
views
DNS Records Configuration - Going Straight to Spam Box?
I know that in order to hit the inbox, the main DNS records need to be properly set up. These are the main DNS records that every mail delivery system should have for their domain:
TLS
A
MX
DKIM
SPF
...
0
votes
1
answer
2k
views
530,5.7.0SMTP server error: MAIL FROM command failed Detail: Authentication Required
PHP Mail error with the message:
530,5.7.0SMTP server error: MAIL FROM command failed Detail: Authentication Required
Following are the key sections of my PHP Script.
new PHPMailer(true)
Host as '...
- 1
1
vote
0
answers
454
views
mail (gnu mailutils) 3.4 not able to send an attachment
We upgraded from Ubuntu 14.04 to Ubuntu 18.04 and now we are not able to send emails with attachments.
On Ubuntu 14.04, we have mailutils 2.2 and we used to use the following command
mail -s "...
- 11
0
votes
1
answer
3k
views
Setting up Postfix to do SPF checks
I'm trying to get our incoming mail set up to do SPF checks in hopes of cutting down on spoofed addresses. We run Postfix from the good old mail-stack-delivery package on Ubuntu 18.04. I followed this ...
- 433
0
votes
1
answer
683
views
Postfix Relay Access Denied But Spam Still Being Sent?
I am running a Postfix mailserver on Ubuntu 19.10 and have mynetworks set to localhost so any attempts to relay email are blocked - i.e.:
telnet emailserver.com 25
helo testing.com
mail from:<test@...
- 211
0
votes
1
answer
199
views
Not receiving mail notification
I recently installed Nagios Core 4.4.3, after a while I wanted to set up mail notification, I installed Postfix (GMAIL SMTP Config) and the config seems to be fine as I tried to send some mails but ...
0
votes
1
answer
1k
views
Postfix | Because When I send a email to Gmail, this is received as spam?
I had installed Postfix with the configuration mode: Internet SIte
My file /etc/postfix/main.cf have follow it:
# See /usr/share/postfix/main.cf.dist for a commented, more complete version
# Debian ...
- 103
4
votes
3
answers
12k
views
Postfix continue sending mails with the hostname instead of the domain
I'm trying to configure Postfix to only send (not receive) emails. I have followed this guide, but I didn't change my hostname to match my domain, because if I can avoid it, I would like to do it.
So,...
- 141
0
votes
0
answers
159
views
Emails that forward back to us from external SMTP server
I have a Mail server (FQDN: mail.ours.com) using Postfix and Dovecot, users having email address like [email protected]. Like many others SMTP server, if user claim that they are from @ours.com, they need ...
- 131
0
votes
1
answer
2k
views
Someone used my postfix to send mails
I just received mail from my server provider that my server is sending mails..i don't know about these mails and i never used smtp of that server before..can anyone guide me how this is possible?...
- 13
0
votes
1
answer
2k
views
Problem with mailutils, ubuntu 18.04
Can someone help me about this problem, I've tried to find out where the problem is comming from, but have no luck, I've tried to re-install postfix and mailutils, but still have this problem, if ...
-1
votes
1
answer
530
views
Mailserver on Ubuntu 16.04
I know, there are like hundreds of tutorials to install "a mailserver" on Ubuntu 16.04, but I just don't seem to get it working and resetted my server the 4th time now....
What I would like to have ...
- 119
1
vote
2
answers
9k
views
Where should I look for logrotate config file of /var/log/mail.log
I would like to change the suffix of mail.log rotated files to include the date, such as
/var/log/mail.log.20180920
I read from this question that /etc/cron.weekly/sysklogd should be changed, but I ...
- 211
1
vote
1
answer
1k
views
MULTIPLE DOMAIN ON A MAIL SERVER AND WEBMAIL
I have a mail server on ubuntu 16.04 with postfix and dovecot and in the same server run roundcube webmail. I access a roundcube webmail with https://webmail.domain1.com (ssl). I need multiple ...
- 11
0
votes
0
answers
250
views
Dovecot Godaddy Vps Gives error when installing with post fix
Iam trying to install dovecot on godaddy vps ubuntu 16 os i have installed postfix with smart host as godaddy works with relay server to send emails
When i am installing Dovecot gives me bellow ...
- 101
1
vote
2
answers
1k
views
Postfix to send email using gmail address
I'm using postfix and mail from mailutils to send email using my gmail address through command line in Ubuntu.
It works fine when I provide both from and to address like below:
mail -s "Some random ...
- 319
2
votes
1
answer
316
views
let's encrypt certificate renewal on mail fails
I have to renew the email certificate but it does not renew when I try to do manually.
root@ubuntu:/etc/postfix# certbot -d mail.gamesyap.com --manual --preferred-challenges dns certonly
Saving debug ...
0
votes
1
answer
4k
views
Why the email I send goes into spam?
I use ubuntu 16.04 on my server and recently I've installed postfix MTA on my server following this tutorial.
The problem is the email I send goes into spam, not inbox. Any idea what's wrong and how ...
- 191
1
vote
1
answer
1k
views
How to allow other machines in my network to use postfix email on my machine? (CCDC)
I'm a bit new to networking and am practicing with a team to compete in a CCDC competition. One of my responsibilities is to handle the email server. I've been given an Ubuntu box in the network and ...
- 11
3
votes
2
answers
2k
views
Ubuntu 16.04/Postfix can't receive emails
We had our VPS already configured, but my co-worker accidently installed sendmail. Postfix went crazy and many errors popped out, postfix refused to run. I uninstalled sendmail, reconfigured/...
- 65
2
votes
0
answers
416
views
postfix relay SMTP oulook.com
I have a Ubuntu 14.04.5, and I'm trying to config the postfix relay an external SMTP with [smtp-mail.outlook.com]:587.
I tried to search online and did some changes, but it still not working.
Here ...
0
votes
1
answer
2k
views
Port closed for localhost but open for the remote connections
When I try the folowing command from a remote machine it says port open
nmap myserver.com -p 143
But when I try the same thing from a local machine (where the mailserver is installed) it says port ...
- 103
2
votes
0
answers
1k
views
How to setup a mail server on Ubuntu to send and receive mail?
For the last couple of days I have been trying to setup my VPS server to send and receive emails without using 3rd party services (e.g. gmail, hotmail...).
I have a website hosted on my VPS that is ...
- 911
0
votes
1
answer
500
views
Postfix / Dovecot / MySQL / Ubuntu 16.04 - Receiving via IMAP, but not sending
I've reached the point where I think I've read every post/article on this and am stuck. I'm relatively new to Ubuntu, and Linux in general, but I've been trying to tackle one problem at a time.
The ...
1
vote
0
answers
445
views
send email with php mail works sometimes ubuntu 17.04 and php 7 + postfix
I have a issue sending email with postfix + php7. I press button to send email and I get it, but sometimes mail is not arrived, clicking in the same button. After a while or few minutes I'm tried to ...
- 11
0
votes
1
answer
2k
views
How to block spoofed local domain email sender addresses on a postfix 3.1.0 smtp relay server
I have postfix 3.1.0 running as a mail gateway/filter for internal SMTP servers each serving their own respective domains.
I have postscreen/spammassassin/amavisd etc running on this email gateway/...
1
vote
1
answer
3k
views
how to configure opendkim on ubuntu 14.04 mail server ( Postfix – dovecot )
I can't config DKIM on my server (Ubuntu 14.04).
Is there any tutorial to it?
(My mail server has been configured according to this manual : http://www.krizna.com/ubuntu/setup-mail-server-ubuntu-14-04/...
