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Questions tagged [dovecot]

Dovecot is an open source IMAP and POP3 email server for Linux/UNIX-like systems, written with security primarily in mind.

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mail server migration tools

We have zimbra as mail server with an old ubuntu in our company. I decided to install a clean Debian or FreeBSD with a Postfix+Dovecot and other needed tools such as OpenDKIM and other tools. We have ...
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How do I use SSL and SASL for dovecot sieve autoreplies?

Dovecot's sieve can send its autoreplies via another SMTP server. But I can't find in the documentation anywhere how to configure authentication and certificates/ssl for this connection. Currently my ...
npr_se's user avatar
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Where to find textstring in Linux/Dovecot

I have installed the iRedMail email server script on an Ubuntu 22.04 with Nginx. Now, when I create a new email account, the user gets an email when he logs in the first time.  It’s a welcome email ...
Mxmail's user avatar
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1 answer
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How to get dovecot to use postfix mailbox?

I try to get postfix and dovecot up and running. I have a little problem with the mail-box path that connects both. Postfix virtual_mailbox_base = /var/vmail virtual_mailbox_domains = mydom.org ...
chris01's user avatar
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1 answer
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Can we use bi-key authentication with dovecot & thunderbird?

I run the dovecot imap server and use thunderbird as frontend. The access is password protected, and I see zillion login attempts with leaked passwords. I would like to switch to bi-key authentication ...
chmike's user avatar
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0 answers
106 views

Apple iPad cannot access IMAP via Dovecot -- SSL unsupported protocol

I have a mail server that has been running for quite some time. Most of my clients use non-Apple devices or are okay with web-clients. I am only now running into this roadblock, because a new client ...
pollyPaul's user avatar
-1 votes
2 answers
997 views

Ubuntu server 22.04 Postfix/Dovecot error: postfix/smtpd fatal: no SASL authentication mechanisms

Following the Ubuntu's official guide Install and configure Postfix, when I run telnet localhost 25 I get Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. Connection closed by ...
schrodingerscatcuriosity's user avatar
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Fix postfix/dovecot to accept local connections on the same VM-host

I have a root-server with some VMS. 10.77.77.101 is the mail server and 10.77.77.107 (vm07) is a PHP webserver running Wordpress. Sending and receiving mails with Thunderbird works fine. Sending mails ...
rubo77's user avatar
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1 answer
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Dovecot not loading sieve or not filtering

root@debian11:/etc/dovecot# dovecot -n # 2.3.13 (89f716dc2): /etc/dovecot/dovecot.conf # Pigeonhole version 0.5.13 (cdd19fe3) # OS: Linux 5.10.0-26-amd64 x86_64 Debian 11.8 # Hostname: localhost ...
No Name's user avatar
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Which OS, SQL, Postfix and Dovecot files/folder need to be backup for disaster recovery?

I'm running an e-mail server (Postfix/Dovecot) on a Pi4, Buster OS. We want to setup a parallel Pi (same basic image) and use rsync to transfer critical files to this Pi using a cron job on a regular ...
RDK's user avatar
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migrate courier on Debian 10 to dovecot on Debian 11 with Froxlor

I use [Froxlor][1] on a debian 10 server only to manage my customers email accounts. Installed is Courier 5.0.6 and postfix 3.4.23. I plan this to first upgrade to Debian 11 then migrate to dovecot. ...
rubo77's user avatar
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1 answer
139 views

Moving emails to a different disk

I have a homely postfix+dovecot server running in ubuntu. I need to move the email storage to a different disk. There is not much information available on how to proceed, most of the use cases refer ...
Yván Ecarri's user avatar
1 vote
0 answers
152 views

What does the dovecot acl plugin actually do?

Can I reasonably do shared mailboxes without the acl plugin? I do personal mailbox sharing completely with unix permissions: i.e. some accounts put their mailboxes in a unix group so that everyone in ...
Robert Siemer's user avatar
1 vote
2 answers
218 views

OpenBSD mail server getting too many hits to non existing emails

Server: OpenBSD 6.6 GENERIC#3 I'm recently working on an OpenBSD mailserver, it daily gets hits to not existing accounts, May 31 16:00:23 Makmx01 smtpd[57197]: 05844daf9b176227 smtp failed-command ...
AnilCpanel's user avatar
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1k views

Problem with dovecot login, how can I fix failed login?

I have a terrible problem with logging into dovecot. This is my /usr/local/etc/dovecot/passdb (just one single entry with plain password): [email protected]{PLAIN}asdf:::::: When I run dovecot auth ...
LongHike's user avatar
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1 vote
1 answer
288 views

NOQUEUE: reject: Helo command rejected: need fully-qualified hostname

I am running 3 x Win11 and 1 x Win10 all with Office 365 Outlook. 3 of the Outlook clients connect to a postfix/dovecot server just fine on my home NAT, and can tunnel through my router from the ...
Deepstop's user avatar
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1 answer
261 views

Dovecot is showing the wrong expiration date for the imap certificate

I am running dovecot dovecot-2.3.8-9.el8.x86_64 on CentOS Linux release 8.5.2111 I have nagios checks warning me if the imap certificate in about to expire. Recently I got just such an alert. However, ...
Aditya K's user avatar
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1 answer
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Calling "doveadm acl" remotely throws "Unknown command 'acl', but plugin acl exists"

I'm trying to configure Dovecot's ACLs remotely (using doveadm -S), like this: doveadm -o doveadm_password=secret acl add -u [email protected] -S mailsrv:24242 inbox [email protected] lookup read ...
Joril's user avatar
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0 answers
217 views

Duplicate message delivery to always_bcc with dovecot and Simple Content Filter (Postfix)

I'm trying to set up a postfix mail server using A Simple content filter (http://www.postfix.org/FILTER_README.html#simple_filter) dovecot as a delivery agent. always_bcc to keep copies of every mail ...
Yanko Hernández Álvarez's user avatar
0 votes
2 answers
1k views

Unable to Open SMTP Port (25, 587) on Vultr

I'm using Vultr for Web Hosting and according to them they have unblocked all SMTP Ports (25, 465, 587, 2525). Now after setting up apache server and installing Postfix, Dovecot and SpamAssassin when ...
MAY's user avatar
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1 answer
329 views

Setting up a home email server using postfix

I have an extra desktop at my house that I want to turn into a email server with postfix and dovecot. I did set it up and can send internal emails on my subnet, 192.168.2.0/24. I configured the ...
meanthatmuchtoyou's user avatar
1 vote
1 answer
387 views

postfix/dovecot temporary failure

Incoming mail gets deferred and never delivered. I have no idea what I'm missing as I usually only setup outbound relays. Any direction here would be greatly appreciated. Specific log Sep 19 19:55:41 ...
Double's user avatar
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1 vote
0 answers
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I don't receive notifications about new emails

I set up postfix + dovecot, and everything works, but I don't get notifications about new messages, the inbox is updated only when I open Outlook or another client, perhaps need to use some MDA? in ...
user19620391's user avatar
1 vote
0 answers
316 views

Postfix rejecting outgoing emails because of "Relay access denied." | "generic_checks: name=reject_unauth_destination status=2"

I am currently rolling out a Postfix/Dovecot configuration on our servers to replace our monolithic mail server. On the test enviroment I have everything set up and it worked there. Now I am rolling ...
spyro95's user avatar
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1 vote
0 answers
229 views

dovecot: Force TCP socket disconnect on imap login failure?

I'm running dovecot 2.2.13 under Debian 8. I'd like to force an immediate TCP socket disconnect after any imap login attempt that fails. Right now, if invalid credentials are supplied during an imap ...
HippoMan's user avatar
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1 answer
304 views

How can I store emails on an external drive with Postfix/Dovecot?

So I set up a a Postfix/Dovecot server on my Raspberry Pi, and I wanted to be able to actually store the emails themselves I have on an external SSD I have since my SD card is 32 GBs and my SSD is ...
Temmie19's user avatar
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1 answer
529 views

postfix + dovecot server successfully by client mail app problem to add account to this server

I need help to solve this problem. I setup a postfix and dovecot server and have some problems with the mail client. I can received the mail and reply from the postfix. Just cannot setup a mail client ...
Choong Leng Low's user avatar
0 votes
1 answer
500 views

postfix dovecot mysql - I can send mail, dont see any new mail

I'm trying to rebuild a debian based internet mail server running Postfix + Dovecot using mysql as a virtual mailbox backend. The server turned into confetti after an update broke a lot of things. ...
bradboy's user avatar
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1 vote
1 answer
655 views

Dovecot - cannot move email out of inbox [closed]

Background ... I had an HDD go bad in an Ubuntu 20 server. I build an Ubuntu 20 server in a completely new machine, then moved as much as I could from the errored HDD to the brand new RAID. Part of ...
burtzerk's user avatar
1 vote
2 answers
731 views

Simple way to send email to Dovecot mailbox from Unix scripts?

I'm looking to send emails to myself from various scripts on my Linux (Debian 10) system. My thought was to install just Dovecot, and not an MTA like Postfix, to avoid the complexity of configuring ...
Jez's user avatar
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1 answer
512 views

Rspamd Ratelimit doesn't work

I have set up my rspamd and redis server but the ratelimit doesn't work. The Rspamd speaks to Postfix and my log file doesnt show anything unusual. Even GTUBE works --> So, the spam protection ...
cd4user's user avatar
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0 votes
0 answers
318 views

Migrating user IMAP files/data to another hard drive/server

Due to a machine crash, I need to move my mail server to another host. This includes user IMAP, but as the old server is not accessible I can't just drag and drop in an imap client application like ...
Don Levey's user avatar
0 votes
1 answer
234 views

Postfix - Exclude user from sending and receiving to-from some domains

In postfix or dovecot, it's possible exclude an user from sending and receiving mail to and from some domains by creating a rule that the user cannot deactivate?
cicoria67's user avatar
1 vote
0 answers
129 views

Dovecot - password query syntax error

Whenever Thunderbird attempts to connect to my server I receive an error in the maillog of dovecot: auth-worker(32527): Error: sql(admin,xxx.xxx.xxx.xxx,): Password query failed: You have an error in ...
Atzin's user avatar
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1 vote
1 answer
1k views

Postfix 550 5.1.1 <[email protected]>: Recipient address rejected: User unknown in relay recipient table;

I want to have postfix relaying mail to my dovecot, which is running on the same host. My users are defined in dovecot's passwd file under /etc/dovecot/users like this: [email protected]:{PLAIN}pw.:10000:...
27612's user avatar
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1 vote
1 answer
727 views

During email delivery, how do MTA, MDA, POP/IMAP connect with each other?

I have already read Why use Dovecot AND Postfix/Sendmail?, Why use both Dovecot and Postfix?, Why use both Dovecot and Postfix? which give the general idea, but here I'm looking for more precise ...
Basj's user avatar
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0 votes
1 answer
3k views

Postfix delivery problem, status=bounced (mail forwarding loop for [email protected]), is this the solution?

I think I've diagnosed a problem with my Postfix mail server, now I just need help implementing the fix. I am a "league member" at a sports website with 11 other people and when someone ...
Jeff's user avatar
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2 votes
0 answers
140 views

Automatic replies with dovecot and pigeonhole

I would like to send automatic replies to e-mails with certain characteristics and it seems that the dovecot pigeonhole plugin can do this, but I'm confused about what I need to get it to work. I now ...
herringbottom's user avatar
0 votes
1 answer
129 views

SSL both for web and mail

I have my public web site with EV SSL certificate. I bought new server and configured postfix and dovecot for mail server. Can I use my website's SSL certificate for postfix and dovecot for secure ...
it dev's user avatar
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1 vote
0 answers
81 views

strip display name when sending email

I'm running dovecot 2.2.27 with postfix 3.1.15. I'm not sure how to articulate what I want clearly. When I send an email from my email server, the recipient can see my display name that I can set ...
bradboy's user avatar
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0 votes
1 answer
392 views

debian 9 - dovecot roundcube sieve

I'm having troubles understanding what I'm doing wrong with getting sieve to work for the purpose of using roundcube's filtering plugin. I followed the guide at https://www.linode.com/docs/guides/...
bradboy's user avatar
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1 vote
1 answer
2k views

Why postfix stores mail in $HOME/var/spool/mail/vmail even if I changed to /var/spool/mail/vmail/

My Mail Client looks for new emails in /var/spool/mail/vmail/trest/Maildir, so I changed the location to store mails to this. Nevertheless, the emails come to $HOME/var/spool/mail/vmail/trest/Maildir....
Piotr's user avatar
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1 vote
1 answer
6k views

Dovecot Active:failed because of ssl_cert: can't open file /etc/dovecot/private/dovecot.pem: Permission denied. Why?

Hello I try to follow this Postfix/Dovecot tutorial series: https://www.youtube.com/watch?v=njiNRppQNJw&list=PLibQjquhfgjjosRrZxlDepXfehDXuQJu_&index=5 When I run dovecot: sudo service dovecot ...
RobZ's user avatar
  • 115
0 votes
2 answers
441 views

LogWatch filtering rule for dovecot’s sieve not applied

I have Debian 10 (Buster) installed with dovecot, sieve and logwatch. In my sieve file I have rules with discard. As a consequence I get plenty of the following lines in my syslog file. Nov 2 19:46:...
chmike's user avatar
  • 211
0 votes
1 answer
382 views

Dovecot Corporate SSL certificate goes wrong somehow

I am trying to install Dovecot for the very first time ever. As far as I see I do have Dovecot up and running already, but I am not happy about these selfsigned certificate that is assigned to. I am ...
Umit Durmus's user avatar
1 vote
1 answer
2k views

O365 attempting to use fetchmail to poll emails to local postfix/dovecot mails server

We currently have an application that uses IMAP/POP3 to access mail in O365; however, Microsoft has determined that they will no longer be allowing basic authentication. By do this, the application ...
helpo11's user avatar
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1 vote
0 answers
877 views

postfix/lmtp User doesn't exist

I am trying to setup a postfix server with dovecot as the mail delivery agent. When trying to send an email to [email protected] the mail is rejected with the following error: Aug 14 ...
Bruno's user avatar
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1 vote
0 answers
557 views

How can I set file permissions for new files in Maildir?

So I run debian 10 through VMbox on win10. I am setting up an email server right now and the things that won't let me turn in this quest is that I can't receive mail from the internet though I can ...
magrega's user avatar
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4 votes
1 answer
11k views

ssl_protocols has been replaced by ssl_min_protocol

Dovecot updated to version 2.3.8 and started to show this warning. I have no clue what this means and how to get rid of it. Using CentOS 8. Log file has this: Jun 30 16:28:42 bluesky.bluesky.com ...
Joey's user avatar
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0 votes
1 answer
600 views

Unable to send mail to a domain outside my own domain

[UPDATE: The issue fixed itself. I am thinking the relay server which in this case Sendgrid had something to do with this.] Everything was running smoothly until the Dovecot version got updated to 2.3....
Joey's user avatar
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