Questions tagged [dovecot]

An IMAP and POP3 email server. When asking about Dovecot problems, please include relevant maillog lines and output of the following command: `doveconf -n`

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Roundcube login failed

Hi I dont know if this is the right platform for this question or not. I am using ubuntu server 18.04 and vestacp on it. I have created more than 650 email accounts using v-add-mail-account command in ...
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Postfix - Connection timed out on port 2525

I am trying to send main with Postfix and Dovecot but I am always getting: May 10 15:13:41 3b15 postfix/smtp[21418]: connect to gmail-smtp-in.l.google.com[64.233.162.27]:25: Connection timed out May ...
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I'm looking for a way to configure distance clustering of postfix and dovecot

I currently have a postfix server and dovecot server sharing files from an NFS server in the UK and the same config in Switzerland. I tried to mailsync but that appeared to lose emails, so then I ...
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Default Special Purpose Folders in Cyrus?

Most IMAP mail programs recognize special-purpose folders for junk, sent, drafts, etc. - the documentation on Dovecot shows how these can be created automatically when a new user is set up. The ...
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postqueue -f displays an empty results even when mail is delivered successfully

How to read Mails Received to a user from Command Line terminal using postqueue ore some other utilises I configures a mail transfer agent postfix in my vps.if i deliver a mail from one of my gmail ...
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How to install new SSL on server that runs apahe2 and postfix

I recently inherited an old project that runs on a VPS without cPanel. Looking around I saw that the server runs an apache2 web server and that postfix is used for sending some automated mails. I have ...
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dovecot: Is it possible to remove a user?

If I do doveadm user '*' I see many users, including my server's username, docker user, and so on. I want to keep all those users, I just don't want them to be dovecot users, I only want to have one ...
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Some versions of Outlook can't log into port 993 (imaps)

I'm using dovecot. I'm having a hell of a time with some versions of Outlook not being able to log into my server over port 993. These clients have to use port 143 and with ssl = required and ...
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Postfix/Dovecot cannot connect to MariaDB after crash

I am running a mail server on CentOS 8 using Postfix, Dovecot (virtual users) with MariaDB. ~1 week ago, Mariadb seemingly crashed and deleted most (?!) of the users, but failed "softly" and ...
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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 ...
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incorporating xfs_quota limits, expired passwords and having local Unix users with Kerberos/FreeIPA users with Dovecot in Fedora

As I continue to test freeipa-server-4.9.3-1, on Fedora 33 with dovecot-2.3.14-1 I've run into the following issues with web mail and Dovecot integration. First we'd like to make sure local Unix ...
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Dovecot proxy with TLS client certificate authentication only fails with “no auth attempts”

Similar to my previous Q&A in which I successfully set up an authenticating Dovecot IMAP proxy with Kerberos/GSSAPI, I want to do the same with TLS client certificates; My upstream (backend) IMAP ...
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Debian - Postfix rejecting user (User unknown in local recipient table (in reply to RCPT TO command))

I recently have been moving from Centos to Debian. A few weeks ago I setup up a server with Postfix / Dovecot and it went fine. I'm doing the same again today but keep getting bounces with the error: ...
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Postfix Can't Receive Internet Email - warning: SASL: Connect to /var/spool/postfix/private/auth failed

Using CentOS 8, I've setup dovecot and postfix and tested that: I can sign in as an authenticated user Read email (IMAP) Send email to the same/different account on the server Send email outbound, to ...
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Postfix/Dovecot - User unknown in table, setting it up with /etc/virtual/domain/passwd

I'm trying for two days to replace Exim with Postfix. I'm able to log into my mail account and send mail from localhost to another sever with telnet, but i cannot send anything to my postfix/dovecot ...
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Postfix NOT WORKING on Port 465 (but working on Port 587)

My Postfix Dovecot mail server is working on 587 but not on port 465. I want to use my outlook client. i tried reading the instructions/documentations but nothing helped so far, I checked available ...
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Postfix, dovecot error in one email account aliases

I have set up Postfix, dovecot in a vps everything is fine except if I send an email from account2@example.com is like I am sending from account1@example.com and also if I send an email from whatever ...
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Postfix aliases and duplicate e-mails - with Dovecot

This is actually a follow-up question to this post: Postfix aliases and duplicate e-mails, how to fix? (I don't have enough reputation to comment on that post.) I have setup my Postfix + Dovecot as ...
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Best way to serve mails from public SMTP server to the internal mail server without initiate connection from DMZ?

I have a basic question for a mail setup which i have to implement. We have an SMTP server (Postfix) in DMZ, which should receive and accept all mails for our internal users. Then we have a internal ...
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Why email response comes from: Postmaster

I've created a sieve script that filters for particular words in Subject, drops the body and sends notification to the recipient and sender. Everything works well but the only thing I can't figure out ...
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Trouble enabling mail_crypt in dovecot / SASL authentication failed

dovecot --version 2.3.4.1 (f79e8e7e4) Ok, I tried to enable mail-crypt but it's being weird. I'm using https://doc.dovecot.org/configuration_manual/mail_crypt_plugin/#ec-key. I ran: cd $HOME openssl ...
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fsDriver type for http api doveadm

i'm searching to use doveadm http api in order to get object from a path so i'm using this curl : curl --location --request POST 'http://10.150.12.11:8080/doveadm/v1' \ --header 'Authorization: Basic ...
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Postfix, Dovecot and Spamassassin unexpectedely fill-ups my disk usage

I am on VPS using CentOS 7, LAMP using Postfix, Dovecot and Spamassassin with Rainloop as my email client. When I have started Postfix using: systemctl enable postfix systemctl restart postfix ...
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Emails to multiple recipients on same server not getting delivered

When I send an email to a single user on a server, it is received by the user without a problem. But when sending and email to multiple users, the emails disappear into a black hole and is not ...
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dovecot + memcached, how to?

Does anyone know how to utilize memcached with dovecot (in order to reduce number of MySQL queries)? There is only very basic documentation regarding dovecot's Dictionary: memcached:param=value:param2=...
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Incoming external email appeared in Postfix log, but not in mailbox

I setup Postfix + Dovecot (with IMAP) for my Ubuntu 16.04 email server. I sent an email from Gmail to my domain, I can see the postfix log "reacts" with the incoming email, but the incoming ...
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37 views

Postfix dovecot unable to authenticate

I use to work with postfix/sasl/courrier-auth on Gentoo for years. I just migrated to Debian 10 postfix/dovecot. I'm unable to make it work : Send mail ok, TLS ok. But unable to authenticate (SMTP 587,...
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Postfix does not receive mail from outside

I have installed postfix/dovecot/postfixadmin using the following guide https://www.linuxbabe.com/mail-server/setup-basic-postfix-mail-sever-ubuntu I have set up virtual domains. I am able to receive ...
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Gmail connection error pop3 on dovecot postfix server

I configured a Dovecot Postfix mailserver on Ubuntu with letsencrypt certificates. It runs fine on mail clients like MacOS mail both in imap and pop3. No errors. However after adding two accounts to ...
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doveadm replication fails with doveadm: Fatal: setuid(XX(banjo) from userdb lookup) failed with euid=8(mail): Operation not permitted (This binary

I've been running postfix & dovecot on separate VMs mounting /var/mail over NFS, and trying to replicate with mailsync, but I get a lot of email duplication so I really want to get dsync working ...
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dovecot: imap-login: Aborted login (auth failed, 2 attempts in 2 secs) - usually working - perhaps timeout issue? Debug options?

I have a mail server with a few dozen IMAP accounts. The configuration is correct for each account, every one of them tests OK. When a client from a particular, very slow Internet connection attempts ...
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Dovecot container tries to invoke sendmail for a sieve filter

I have two docker containers: postfix and dovecot. Both have the corresponding services installed and running. Everything is working great but now i am trying to integrate sieve filtering. One of ...
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Copy mails from old to new postfix installation

I setup a postfix/dovecot installation following this ispmail guide on workaround.org I recently changed my host for a good reason. I followed the very same guide once again. This time, I wound up ...
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Is dovecot compatible with Outlook's “Leave on server for X days” setting?

I've got a linux box running dovecot/postfix. I was surprised to learn that a client that had many GBs of email was running POP3. I thought they must have been using IMAP. But it turns out the server ...
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Thunderbird doesn't work with postfix/dovecot

My environment: ubuntu 20.04.1 LTS postfix 3.4.13 dovecot 2.3.7.2 Setup is extremely simple. I configured postfix via built-in master as an internet site host. Dovecot (I use it as IMAP server) ...
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Dovecot+Postfix: userdb lookup: user noreply@example.com doesn't exist

I am trying to send email from my local computer over smtp on my remote server. I have installed postfix+dovecot and use virtual users for authentication over login mechanism. I have created new ...
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How to get Postfix to work with Dovecot using an LMTP inet_listener and SSL?

I'm trying to get Postfix 3.4.13 to deliver mail to a remote Dovecot 2.3.7.2 instance using an LMTP inet_listener with SSL turned on. LMTP works fine without SSL enabled, and other Dovecot protocols ...
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How to make sieve-filter use virtual users

sieve-filter -e -W -u user@example.com /path/to/sieve/file.sieve INBOX fails with the error: sieve-filter(root): Fatal: Unknown user The output of doveadm -n is auth_master_user_separator = * ...
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1answer
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How to validate email From: address with authenticated user (prevent sender/login mismatch) in dovecot submission server?

Im looking for the same behavior as postfix reject_sender_login_mismatch, however i want dovecot to handle this. Starting since version 2.3 Dovecot offers a submission SMTP:587 server. I like this and ...
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1answer
30 views

Login aliases for smtp/imap?

I have a user account on my system, "backup_account", which is an alias for backup@example.com. I can't use the simpler account name, "backup", because a system user (uid: 34) ...
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1answer
30 views

Centos 7 Withe Sendmail & Dovecot. Auth Broken

I have tried many different configuration options but using either Outlook or Thunderbird on macOS I cannot send through a server migrated to a new machine. I have done the Dovecot troubleshooting ...
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1answer
56 views

Postfix email outside domain

I have a problem with the email forwarding, more like I do not know how to configure Dovecot to do what I want. Per my understanding the first look up of mails that dovecot does is look up for local ...
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1answer
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Dovecot submission protocol keeps getting turned back on after Debian upgrade

I have dovecot imap server and exim4 running on Debian Buster. I am using exim4 for smtp, but at the Debian upgrade before last (early Jan 2021), Debian arbitrarily turned on submission in dovecot by ...
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Dovecot not authenticating clients in mail server with postfix cyrus(for sasl authentication) and dovecot in centos 7

As i have been building a mailserver i have another question in process that i haven't been able to find in google so i am expecting i will get a answer here so The update is i have created a ...
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1answer
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sieve to check if from and reply-to are the same

i'm currently trying to set up a sieve rule to check if From and Reply-to headers are the same. If not reject the email. But i can't seem to get it working. I'm thinking of something like that: if ...
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1answer
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Should I, and how should I defend against DOS SMTP attack

I was troubleshooting an outlook client trying to authenticate with the Mail server, and the client would time out ( it was an issue with a local outlook installation & machine firewall) To ...
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71 views

Why went dovecot pop3/imap server down?

The VPS went at some point down, I am watching the log but do not understand why went down and how it could be fixed to avoid outages in the future. The logs I have available for the time of the event:...
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37 views

How to get dovecot to reload an SSL certificate with minimal impact

I have been unable to find any documentation on how to force Dovecot to reread a certificate when its updated. At the moment I'm doing /bin/systemctl restart dovecot Does anyone know if this causes ...
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CentOs Dovecot won't start

Running service dovecot status reults as Redirecting to /bin/systemctl status dovecot.service ● dovecot.service - Dovecot IMAP/POP3 email server Loaded: loaded (/usr/lib/systemd/system/dovecot....
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83 views

Dovecot Proxy with Lua or?

I've build a Dovecot proxy that sends users to specific backends based on their domain. Domain A goes to server A and domain B goes to server B, etc. The list of domains is not static, but it isn't ...

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