Questions tagged [dovecot]

An IMAP and POP3 email server.

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18 views

Postfix & Dovecot: mail shows up in sent but nothing in inbox

My probelm in short: I Have a local mail server (postfix and dovecot and using self-assigned SSL, openssl) on ubuntu server 18.04, i can login from another pc in same network fine (only get warning ...
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13 views

Server Configuration Error if Receiving e-mails

Another Problem, I have a VPS where I installed a Dovecot, Postfix, PostfixAdmin and Roundcube webmail. I can not receive emails anymore from any external address, I get this Problem: This is the ...
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9 views

Postfix “not owned by user”

I have a VPS where I installed a Dovecot, Postfix, PostfixAdmin and Roundcube webmail. I haven't touch it from months but from 2/3 weeks I can't send e-mails anymore. I can only send them through ...
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50 views

RoundCube: Connection to storage server failed

This is probably the hardest challenge I have ever faced on Linux. I would never thought sending and receiving the ubiquitous Emails is such hell of a complication! Following this tutorial on Setup ...
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1answer
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Having port 25 closed triggers error on MXtoolbox. Do I need Port 25 open for mail server to function correctly and consistently?

Environment: CentOS, Postfix, Dovecot, Digital Ocean Droplet Background: The mail server I just installed appears to send and receive normally. I tested my website on MXtoolbox and received 1 error ...
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What format/encoding is the Dovecot Diffie-Helman params file?

I'm stuck on Dovecot 2.2.x because 2.3 package isn't available yet for CentOS 8.x, and I don't want to custom build in this use case. Further, I'm bootstrapping this machine in order to snapshot it ...
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46 views

Dovecot: Can't connect to server

I'm setting up a network using virtual servers. I'm using Windows Server 2016 as my DHCP and DNS server, which also has Active directory on it. I'm also using Ubuntu 18.04 as my web (www) and webmail ...
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Dovecot v2.3.4.1 Debian 10.3 mbox format - Error: chdir(/var/spool/mail/domain/user) failed: Not a directory

I am trying to setup dovecot and have a strange problem. I configured it to: #dovecot -n|grep ^mail mail_gid = mail mail_location = mbox:/var/spool/mail/%d/mailboxes/%n:INBOX=/var/spool/mail/%d/%n ...
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1answer
19 views

Dovecot + Exim = relay not permitted

I have setup a simple mail server with Exim and Dovecot. Since obviously I don't want to have an open relay server, I want to restrict the access from outside. I figured the following configuration: ...
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26 views

dovecot socket not found running as service

I got a strange problem concerning dovecot. My dovecot was working flawlessly on my cubietruck until yesterday, when I upgraded from debian/jessie to debian/stretch (armhf). /var is symlinked to ...
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Dovecot enters a failed state with exit code error

I am having problems with dovecot on a debian 9 system running webmin/virtualmin. After an update, it seems that the renewal of a domain SSL certificate caused at least one client domain to use the ...
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postfix - disable users to change email username after login

I have a mail server with Postfix and Dovecot and users can send emails, but (after login) they can change the address and send from other username@example.com. For example, user1@example.com login ...
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After a Postfix mail server is installed do I need to add mail.example.com to the hosts file?

Environment: CentOS, Postfix, Dovecot, Digital Ocean droplet My /etc/hosts file contains these lines. # The following lines are desirable for IPv4 capable hosts 127.0.0.1 example.com example 127.0.0....
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50 views

Why do I need an A and AAAA record in addition to MX record for my mail server?

Environment: Postfix, Dovecot, CentOS, Digital Ocean droplet DNS Records: Type: A Hostname: mail.example.com Value: 1.1.1.1 Type: AAAA Hostname: mail.example.com Value: 1000:1:1:1:1:1:0001 Type: ...
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Postfix/LDAP authentication - Restrict select users from connecting to smtp from public IP

In dovecot, I am able to use LDAP to restrict public access to specific users using LDAP user_filter and pass_filter queries. I would like to do the same thing in order to restrict specific users from ...
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How to force dovecot startup errors to appear in mail.err?

Dovecot won't start on my Ubuntu 18.04 server: dovecot.service - Dovecot IMAP/POP3 email server Loaded: loaded (/lib/systemd/system/dovecot.service; enabled; vendor preset: enabled) Active: ...
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Why does just root user receive all emails in postfix

I configured postfix and dovecot in centos 7 such as following: /etc/postfix/main.cf: myhostname=mail.example.com mydomain=example.com myorigin = $mydomain home_mailbox = mail/ mynetworks = 127.0.0....
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Add custom from display name on Postfix+Dovecot+SQL

I have Postfix+Dovecot+SQL mail server on Debian. I'm trying to get the display name from the database (if available) and insert it by default to From: __display_name_here__ <username@domain.com>...
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103 views

dovecot authorization fails when trying to connect via mutt but all suggested dovecot auth tests work

I can't figure out why the dovecot authorization process is dropping the domain from my username name when when attempting to connect through my client (mutt). I'm using the simple auth-password ...
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1answer
135 views

Dovecot Failed to initialize SSL server context

I'm trying to configure TLS for Dovecot 2.3 but after setting all things up I'm not able to start Dovecot: Apr 16 20:56:02 master: Info: Dovecot v2.3.9.3 (9f41b88fa) starting up for imap, pop3, lmtp ...
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How to specify pattern for share folder using ACL vfile

My 90-acl.conf file looks like: plugin { #acl = vfile:/etc/dovecot/global-acls:cache_secs=300 #acl = mysql:/etc/dovecot/dovecot-dict-sql.conf.ext acl = vfile } # To let users LIST mailboxes ...
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13 views

Horde webmail not recognizing Dovecot ACLs

I'm trying to set up one mailbox to be shared with another one using steps described here but for some reason I do not see that option in my mailbox (logged as an admin) even I have set ACL as a true ...
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9 views

update dovecot-dev package to v2.3.9.2

I'm trying to install the fts-xapian module for dovecot on an OVH VPS Cloud instance. I currently have Ubuntu 16.04. After compiling fts-xapian I see it is installed in /usr/lib/dovecot/modules, ...
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107 views

Exim + Dovecot sending or receiving an email occurs the error: Unknown user

I'm running a mail server with CentOS 7 + Exim 4.92 + Dovecot 2.2.36 and RoundCubeMail as web interface, and have the following problem: when I send to or receive from emails which is not admin@ or ...
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73 views

Dovecot; TLS handshaking failed: no shared cipher

I've just installed a new webserver (Debian Buster, with ISPConfig3 & Dovecot) which hosts a few domains and mailboxes. Email works fine. I'm able to retrieve mail from the server using my mail ...
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91 views

Where are stored my emails?

I am newbie. I created mail server thanks to the tutorial Everything works, but I want to make backup of my emails. I made mysql backup, but email are not there. I checked /var/mail/vhosts and /...
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21 views

Can't connect to mail on newly installed webserver

I just installed a new webserver running Debian Buster using the tutorial found here: https://www.howtoforge.com/perfect-server-debian-10-buster-apache-bind-dovecot-ispconfig-3-1/ It replaced an old ...
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42 views

Postfix via relay server and LMTP configuration for incoming delivery to local mailboxes

I'm trying to set up something like a configuration below for a local delivery (to force local delivery via relay server): Dovecot ---------------> Postfix --> Relay Server -┐ Dovecot <-- ...
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Setting up new server. Strange entries in /var/log/mail.info

I'm setting up a new webserver and noticed these lines in my mail.info appearing every 5 minutes. Anyone know what is causing this? Mar 30 17:45:02 enterprise dovecot: imap-login: Disconnected (...
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can not add another virtual name postfix postmap

I've been at this,(building a web server), for over a week and have it all working. I've run into every glitch I can imagine, makes me learn. But now I've hit one I just can't make out. In etc/...
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1answer
67 views

Compress old emails with dovecot

How can I configure dovecot to compress/archive old emails (say 6 months old) with the users still being able to read them, to save some precious space on the server?
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2answers
40 views

How do I set my email name in postfix?

Environment: CentOS, Postfix and Dovecot. Question: How do I set my email name in postfix? Example: dave@example.com might be the email address but the name would be "El Presidente". When I open ...
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1answer
28 views

Dovecot on Centos7 - not able to start with systemd

Freshly compiled dovecot 2.3.9.3 on Centos 7 for some reason not able to start ● dovecot.service - LSB: Dovecot init script Loaded: loaded (/etc/rc.d/init.d/dovecot; bad; vendor preset: disabled) ...
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Dovecot expunge with POP3

I want to have Dovecot remove e-mails from a POP3 inbox that are over a year old, regardless of whether they have been read or not. From what I have read for autoexpunge to work the message should be ...
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Postfix relay mail with unknown local recipient to a different mail server (split domain setup)

The situation is as follows: Domain example.com has email accounts on two systems: Some accounts are on a remote Exchange Server (Microsoft 365) and some email accounts are on a dedicated ubuntu ...
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52 views

Qmail - Authuser Admin for imapsync migration

I am trying to migrate my mailboxes from an Exchange server to a Qmail server. I would like to use the Admin user for Zimbra to copy the emails to the qumail server that hosts the new mailboxes. ...
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Dovecot logs shows communication from sSMTP as errors

For some reason Dovecot logs shows any emails generated by Sieve scripts and sent via sSMTP as errors: Mar 02 11:36:24 lmtp: Error: [<-] 220 app01.localdomain ESMTP Postfix Mar 02 11:36:24 lmtp: ...
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26 views

Dovecot IMAP server failure

I'm trying to configure an email server. I'm using squirrelmail, dovecot and postfix. When I try to login on squirrelmail site it gicves me ERROR: Connection dropped by IMAP server. The /var/log/...
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1answer
114 views

Postfix server only attempts to connect on (blocked) port 25, not 587 as set in config

I have just finished the setup of a postfix/dovecot mail server installation, running on GCP Compute Engine. Receiving email works as intended, but I have been having difficulty with sending mail. It ...
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SOLVED - Postfix - “Server configuration error.”

Solved, Postfix wasn't finding hash:/etc/postfix/roleaccount_exceptions. I'm getting this error in my mail log: Feb 29 21:06:14 mail postfix/smtpd[29464]: NOQUEUE: reject: RCPT from mail-...
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1answer
37 views

Postfix: User with aliases has a mailbox, with filename where all aliases are listed

I have a postfix server running on my CentOS 7 machine. I managed to configure the postfix server to use my LDAP server to retrieve accounts and it works fine, emails are received and saved to a ...
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24 views

Dovecot imap auth in large company

I manage email in large company. They have few emails, but lots of employees who read them. Every email is read from 10+ employees. At the moment, we use password auth and if someone left the ...
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2answers
102 views

Dovecot Unable to access letsencrypt certificates on LEMP server

I am attempting to setup postfix and dovecot on a LEMP server. I am using letsencrypt certificates. I suspect I am having a permissions problem because I cannot access the /etc/letsencrypt/live folder ...
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273 views

Send Mails with Postfix through SSH Tunnel

I'm a bloody newbie to SMTP and Postfix but I have configured a Postfix SMTP Service with SASL authentication on Raspbian in a local network behind a firewall. There is also a Dovecat IMAP Server ...
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61 views

DNS record setup

I recently set up my own mail server using postfix as MTA and dovecot as an imap 'server' (is this the right term?). Now dns records is the last thing to do and I was wondering if I understood this ...
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1answer
54 views

Why do I get Configured passdbs don't support credentials lookups from dovecot

I am trying to add authentication to Postfix on my Debian 4.9.65-3+deb9u1 server. The first stage of this is to get authentication working with dovecot, apparently. If I run the command: # doveadm -...
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17 views

emails received on the server but available through POP3 or IMAP

I set up my server to receive emails and I want to be able to read the emails through POP3. When checking logs, /var/log/mail.log, I can see the email arriving. If I su as the user on the server, I ...
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2answers
48 views

Dovecot migration from mbox to mdbox

I am doing a migration from mbox to mdbox on a new disk. From /mnt/mail/$user to /mnt/mail2/$user Current mail_location = mbox:~/mail:INBOX=/mnt/mail/%u/mail/Inbox The new mail_location = mdbox:/mnt/...
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1answer
85 views

What are the correct dovecot file permissions for /etc/dovecot on Ubuntu 18.04?

I can't log in to my newly self-hosted webmail and I'm getting the following entries in /var/log/mail.log Feb 10 02:00:31 ip-172-26-15-53 dovecot: lmtp(myemailuser@example.co.uk): Error: open( /etc/...
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161 views

SOLVED - IPTables INPUT DROP and Port Opening

I'm hosting a Mail Server (PostFix, PostFix Admin, Dovecot), a Minecraft Server and a Discord bot, I'm trying to create a firewall with INPUT and OUTPUT drop, however with this configuartion, ...

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