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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Login failed for root from 190.20.86.0. AUTHENTICATE PLAIN: * BYE. Internal error ocurred, refer to server log for more information

Introduction I have been dealing for over 12 hours looking with an issue with my Roundcube installation in my VPS, Ubuntu 16.04. The IMAP server (dovecot) and SMTP server are working and can telnet ...
0 votes
1 answer
175 views

Dovecot ignores userdb

my Dovecot installation doesn't overwrite the quota_limit from the userdb. I already verified that it does successfully connect to my Mysql database, but my quota limit still stays at the default ...
0 votes
1 answer
154 views

Authenticate Postfix through Dovecot with slightly different settings

I'm setting up a server with Dovecot (2.2.2) and Postfix (3.1.0). Dovecot authenticates against LDAP and Postfix uses Dovecots SASL. That already works fine. But I would like to have slightly ...
0 votes
1 answer
3k views

Postfix, dovecot, squirrelmail server able to send but not receive emails

I have setup a mail server using this guide: https://www.ostechnix.com/setup-mail-server-using-postfixdovecotsquirrelmail-in-centosrhelscientific-linux-6-3-step-by-step/ The webmail allows to send ...
0 votes
1 answer
174 views

mx record server sending email back to webserver when webserver configured to use mx server to send

I have my webserver running a webmail client. I have this webmail client configured to use a seperate standalone mail server to send emails. I can send email from this webmail to gmail successfully. ...
1 vote
1 answer
3k views

Client tried to access nonexistent namespace (Dovecot and Squirrelmail)

I've been at this for several days and, in spite of countless searches, haven't been able to find a solution. I host several domains in a vps and have all email forwarded to gmail addresses, which ...
0 votes
0 answers
298 views

Roundcube shows "www" in email address after login

After login to roundcube email address is like this: [email protected] In postfix config file I have changed these lines to: myhostname = example.com mydomain = example.com myorigin = $...
1 vote
1 answer
16k views

Postfix returning "no SASL authentication mechanisms" despite mySQL auth config being seemingly valid

I am trying to set up a mail server that has multi domain support using Postfix+Dovecot+mySQL. I was following this guide. I seem to have everything set up and the server is sending the dovecot ...
0 votes
0 answers
431 views

Dovecot zlib compressed mail

I'm doing migration of existing mails from old mail server to a now one. Some of the emails are compressed with zlib. At the file 10-mail.conf in old server there is setting for zlib plugin: ...
0 votes
1 answer
232 views

Dovecot can't receive external mails, AddressValueError

After updating from dovecot-1:2.2.10-7.el7.x86_64 to 1:2.2.10-8.el7.x86_64 from dovecot-mysql-1:2.2.10-7.el7.x86_64 to 1:2.2.10-8.el7.x86_64 from dovecot-pigeonhole-1:2.2.10-7.el7.x86_64 to 1:2.2.10-...
10 votes
1 answer
430 views

Postfix Mail server rejecting sending mail from wordpress site

I have recently setup a mail server on linode using Postfix, Dovecot and MySQL. I can send and receive mails from a mail client (Outlook) but any time I try to send mail with a user from a wordpress ...
1 vote
2 answers
2k views

Mailbox on-the-fly decryption (dovecot)

To avoid casual mailbox snooping for an IMAP server I am thinking of "transparent encryption" setup that would: Public key encrypt incoming messages at local delivery time Private key decrypt said ...
3 votes
3 answers
5k views

How do I move a Maildir to a subdirectory of another user?

When an employee has left the company I want to move their entire Maildir to be a folder in an "old employees" account. Given that Maildir uses the filesystem exclusively, I feel it should be ...
0 votes
1 answer
562 views

How do I create mail.example.com with postfix and dovecot? [closed]

I currently have postfix and dovecot installed on my Ubuntu VPS. While I can log in via a mail client like thunderbird with the IP, it would be nice to have mail.example.com. I already own a domain ...
6 votes
2 answers
11k views

How to configure postfix and dovecot so that thunderbird can automatically find settings

Our mailserver is a Ubuntu Server box with a Postfix/Dovecot combination. We enabled starttls with a correct certificate and everything is working ok. A lot of our users are using Thunderbird for ...
1 vote
1 answer
3k views

Fail2ban is not banning IP

Software: Centos 7 (with firewallD) fail2ban 0.9.5 dovecot 2.2.10 I am trying to setup fail2ban on my mailserver, to secure it from brute force login through imap (dovecot). Right now i'm stuck, and ...
0 votes
1 answer
2k views

Postfix per domain quota

We are using a combination of Postfix 2.11.0 and Dovecot 2.2.9 as MTA/MDA. As a frontend for managing mail domains and mailboxes postfix.admin is used. Since allowing users to add mailboxes to their ...
0 votes
1 answer
705 views

Forbid IMAP clients create mailboxes in Dovecot

In this specific setup I want to forbid clients to create mailboxes other than the default ones. I searched for this in the documentation but found nothing. I'm using Dovecot with virtual users.
0 votes
1 answer
1k views

Dovecot issuing LetsEncrypt certificate, openssl / node tls fail to verify

EDIT running openssl s_client -connect mail.mydomain.com:993 -showcerts -CAfile identtrustroot.pem works. So that suggests that node tls doesn't have any knowledge of that root, surely that can't be? ...
0 votes
2 answers
2k views

Thunderbird refuses to connect to dovecot with letsencrypt cert

I've set up https://hub.docker.com/r/tvial/docker-mailserver/ with a Letsencrypt certificate and it seems to work. For instance, using openssl, I can connect: openssl s_client -host test-mail....
1 vote
0 answers
1k views

Postfix: Temporary internal error / Dovecot: Initialization failed

Today I wanted to make a mail server, but it did not work. Can you help me ? I followed this tutorial: https://www.linode.com/docs/email/email-with-postfix-dovecot-and-mysql Errors obtained: Sep 19 ...
0 votes
1 answer
681 views

Postfix and dovecot. TLS not available

I've been trying to setup a send only SMTP server with postfix and dovecot, on Ubuntu 16.04. The problem I'm having is that when trying to send an email I get the message back. 4.7.0 TLS not ...
1 vote
0 answers
2k views

postfix erro: mail transport unavailable

I install postfix, dovecot, Amavisd, Spamassassin and clamav on FreeBSD 11. I can not receive mail and the log is: Sep 19 16:00:16 t7 postfix/smtpd[1309]: connect from t7.example.com[192.x.x.x] Sep ...
0 votes
0 answers
1k views

Dovecot logins fail for virtual users (permission denied, we're not in group 5000)

I have: Ubuntu 17.04 Dovecot 2.2.27 (c0f36b0) Postfix 3.1.4 regular unix users with mail in /home/bob/Maildir virtual users with mail in /var/mail/vhosts/domain.com/bob/Maildir Regular users can ...
3 votes
2 answers
5k views

Dovecot: Email clients and duplicated folders

So in my server I'm usually going against a problem, different emails clients call some special folders like Sent and Trash different names like Sent Items and Deleted Items. My question is, can I in ...
0 votes
1 answer
1k views

Configuration could not be verified - Is the username or password wrong? from Thunderbird with Postfix and Dovecot on Ubuntu Server 16.04

So I have done a very basic install of Postfix and Dovecot on my Ubuntu Server 16.04 and I am having trouble to setup / login to my account with Thunderbird. Installed of Postfix by following steps 1-...
0 votes
1 answer
244 views

separate [email protected] from [email protected]

I've a Postfix + Dovecot server in my Arch-based distro. There are multiple domains pointing to my host and multiple users in it. The issue here is that, mails to [email protected] also appear in user@...
0 votes
1 answer
574 views

Postfix CA Signed TLS Fail

When I use a signed SSL certificate from a certificate authority, Postfix does not function properly and I get this error in /var/log/mail.log: Sep 8 12:43:03 mail postfix/master[15557]: daemon ...
2 votes
2 answers
49 views

For fresh Linux setups, do we still have to worry about Heartbleed, Logjam, etc.?

There was a period a while back when a bunch of serious vulnerabilities were found. Heartbleed, Logjam, POODLE, FREAK, etc. Nothing major like that has come up during the past year. Question: If I ...
0 votes
1 answer
3k views

Postfix and dovecot can not receive mail

I setup a mail server (with multiple virtual hosts) on a VPS. I used postfix, dovecot, postfixadmin, squirrel and mysql. I can send mail by squirrel, but can not receive any mail. This is my /var/log/...
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 ...
0 votes
1 answer
3k views

My mails sent from Postfix + Dovecot recognized as Spam by Gmail [duplicate]

I have a postfix + dovecot mail server. The mails sent from this server to gmail goes in spam. The postfix is configured on our server and it has never been used for spamming. And i also added SPF, ...
0 votes
1 answer
489 views

SSL Errors in log after thunderbird fails

I am new to operating an email server (postfix + dovecot), and things seem to be working with my preferred email client (mutt), but when I try to use thunderbird, thunderbird fails to connect (and ...
0 votes
1 answer
218 views

Replying on my email client (gmail) to a postfix forwarded email replies to my domain address instead of the original sender

I've set up postfix with dovecot on my server with the domain "example.com" Right now if an email is sent to one of my configured (no login) users their emails are shown in the /var/mail folder. ...
2 votes
0 answers
1k views

dovecot doesn't calculate quota of ~Maildir/.INBOX

doveadm quota get -u [email protected] Quota name Type Value Limit % User quota STORAGE 1323 10240 ...
1 vote
1 answer
522 views

Dovecot quota-warning.sh executed when I delete message

plugin { quota_rule = *:storage=10M quota = maildir:User quota quota_rule2 = Junk:ignore quota_rule3 = Trash:storage=+100M quota_warning = storage=50%% quota-warning 50 %u ...
4 votes
1 answer
28k views

Postfix 451 4.3.5 Server configuration error

So I'm running mail on my VPS, using Postfix + Dovecot. I am able to send, but not all mail comes in. Note: DOMAIN = my domain, but I blocked it for security reasons. The case: I want to use my mail ...
0 votes
1 answer
782 views

dovecot: how to auto-create submailboxes

I have some mailboxes automatically created by dovecot, such as Junk, by editing 15-mailboxes.conf: mailbox Junk { special_use = \Junk auto = subscribe } I would like to add a submailbox. I ...
2 votes
0 answers
377 views

dovecot 2.x doesn't work with @domain1.org authentication

cat /etc/dovecot/conf.f/10-auth.conf [...] disable_plaintext_auth = no auth_username_format = %n-AT-%d [...] or also using %u variable (full username (e.g. user@domain) cat /etc/dovecot/conf.f/auth-...
1 vote
2 answers
3k views

Create custom mailboxes with dovecot

I'm trying to setup dovecot + sieve plugin. I'm suing the Maildir format. I use Thunderbird to read the emails so i don't need a webmail on my server. The basic config works fine but now I want to add ...
0 votes
1 answer
606 views

Postfix can receive but can't send external [closed]

I recently installed ispconfig 3 from this manual: https://www.howtoforge.com/tutorial...-9-stretch-apache-bind-dovecot-ispconfig-3-1/ But now the problem is; I can receive mail from external clients ...
-1 votes
1 answer
31 views

Dovecot + Postfix: How to automatically send a e-mail back when requested e-mail adress is not found

I currently have a e-mail server set up with dovecot and postfix, getting users from a mysql database, on an ubuntu server. I would like to know how to automatically send an e-mail to the sender if he ...
0 votes
1 answer
503 views

Subdomain Certificate on SMTP Server

So I have an SSL certificate specifically for my mail. subdomain, and a separate certificate for my root domain. Obviously, I don't want emails to be sent or received looking like [email protected]....
6 votes
4 answers
17k views

Dovecot Migration and old mails

I'm migrating my mails from an old server to a new one, the configuration is good (mysql virtual accounts & imap only), with dovecot and postfix. It's already running for other users, I just want ...
0 votes
2 answers
2k views

Postfix and Dovecot I can not send external emails

I am trying to install an email server with dovecot and postfix using a MySQL database. I can send emails to other users of my domain @ eddelus.com and I can also receive emails from external domains, ...
2 votes
1 answer
106 views

Dovecot pw generation mismatch

According to Dovecot's wiki, a SHA256 scheme is the sha256 sum of the password stored in base64. $ doveadm pw -s SHA256 -p "test" {SHA256}n4bQgYhMfWWaL+qgxVrQFaO/TxsrC4Is0V1sFbDwCgg= but it does not ...
0 votes
2 answers
97 views

Postfix transport old local domain to new Exchagne

I have Postifix with Dovecot for more domain a.com b.com c.cz maindomain.com etc. I created new Exchagne server for domain maindomain.com and when I change MX for maindomain.com everything works good ...
0 votes
1 answer
2k views

Dovecot "Address already in use" error

I've some problem with starting dovecot server. I get the following error: Failed to start Dovecot : Error: service(imap-login): listen(*, 143) failed: Address already in use Error: service(imap-...
-2 votes
1 answer
3k views

Dovecot Not Attempting to Authenticate Clients Centos 7

We have just installed our email but the system is not recognising client log in attempts, in the mail log the message 'Disconnected (no auth attempts in 0 secs): user=<>' is displayed. The server ...
3 votes
4 answers
3k views

Dovecot/postfix: forward all current messages

What I'm try to achieve it's pretty simple, and, after googling, its hard to believe I've been unable to find a solution. What I want is to forward all current messages (already delivered) of an user ...

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