18
votes
Accepted
doveadm: Delete messages older than date
Apparently my solution was almost right, I can do what I need with:
doveadm expunge -u [email protected] mailbox INBOX SENTBEFORE 1-Jan-2011
doveadm expunge -u [email protected] mailbox INBOX.Sent ...
- 1,238
16
votes
Warning `undefined parameter: mua_sender_restrictions` when `postconf -n`
Let me guess, you're running latest Postfix. Yep, Postfix maintainer of postfix added the mua_client_restrictions on of the config file(s) ... in a partial manner.
The "bug" was introduced ...
- 989
15
votes
Accepted
How do I update Postfix .db files after removing unwanted emails?
postmap /etc/postfix/virtual will update the virtual.db. It's not necessary to reload Postfix configuration. See postmap(1).
- 49.8k
14
votes
Is there a way to pause mail delivery in Postfix (accumulate in queue)?
Use this to stop (pause) and start delivery of outgoing mail again:
sudo postconf -e defer_transports=smtp; sudo postfix reload
sudo postconf -e defer_transports=; sudo postfix reload; sudo postfix ...
- 241
13
votes
Accepted
How do I setup a SENT and TRASH folder with Dovecot?
The original answer from 2011 is outdated.
Dovecot lifecycle announcement:
For any version before 2.2, we are not going to be providing any patches
or fixes. This has been the case before, but we are ...
- 398
12
votes
dovecot-lmtp does not exist
The answers and responses already given contain all the parts of the solution, here's my attempt to tie that info together, having struggled with and now fixed the same problem:
Overview: Dovecot ...
- 366
12
votes
Connect to private/auth failed: No such file or directory
After spending some hours trying to figure out this, I finally fixed my problem, hope this helps to others...
In the postfix/main.cf file you have something like:
smtpd_sasl_path = private/auth
and ...
- 335
12
votes
How to check if dovecot's configuration is valid? (config file syntax)
Use doveconf.
The below doveconf command will exit non-zero and output a message if there's an issue with your dovecot config
doveconf 1>/dev/null
echo $?
The above command will output only STDERR ...
- 801
11
votes
Accepted
Gmail flagging Dovecot email as insecure
I solved this by adding both these lines to Postfix's main.cf:
smtp_tls_security_level = may
smtpd_tls_security_level = may
(I had only set smtpd_tls_security_level because of a misleading article ...
- 529
11
votes
Accepted
Dovecot: missing +w perm: /var/mail, we're not in group 8(mail)
Do you read this documentation?
You must add
mail_privileged_group = mail
Or make /var/mail world-writable with sticky bit set, allowing anyone to create new files but not overwrite or delete ...
- 3,313
11
votes
Accepted
Postfix + Dovecot: Create send-only email account
The easiest solution would be to add the user just like any other user, but restrict recipient. This will give an error during RCPT TO regardless whether the user actually exists or not.
For example,...
- 49.8k
11
votes
Accepted
What is the purpose of the < (less than symbol) before path in dovecot settings
It’s to make it read the contents of the file rather than using the literal string “/etc/dovecot/private/dovecot.pem” as the certificate.
- 8,078
11
votes
Set up certs for multiple domains in Postfix and Dovecot
This is done by looking at the unencrypted domain name in the Server Name Indication (SNI) header in the TLS handshake to select the right certificate before any encrypted data is exchanged. At the ...
- 244
10
votes
SASL LOGIN authentication failed: UGFzc3dvcmQ6 - Find the username
If you have fail2ban installed you can enable sasl (or sometimes called postfix-sasl) in your jail.local (or jail.d) and that should make the annoyances go away.
## for me this is in /etc/fail2ban/...
- 398
10
votes
SASL LOGIN authentication failed: UGFzc3dvcmQ6 - Find the username
I was able to prevent this by setting up SSL and requiring auth attempts over SSL only with
smtpd_tls_auth_only = yes
This doesn't present the AUTH option to the remote client after EHLO and so the ...
- 1,174
10
votes
Postfix Mail server rejecting sending mail from wordpress site
Disable IPv6
inet_protocols = ipv4
Should do the trick
Open /etc/postfix/main.cf with a text editor
Find the line inet_protocols = all
Replace all with ipv4
Restart postfix
https://clientarea....
- 9,588
9
votes
dovecot start "Address already in use" error
Just did an upgrade on an AWS Linux instance and dovecot wouldn't start with Address already in use errors (same as original poster).
netstat and lsof didn't show any process attached to those TCP ...
- 91
9
votes
SASL LOGIN authentication failed: UGFzc3dvcmQ6 - Find the username
There are at least two ways of finding the user name(s) being tried.
Logging SMTP transactions with Postfix
If you know which host(s) your strange connections are coming from, you can enable verbose ...
- 91
8
votes
Dovecot Migration and old mails
I tried the accepted answer and it failed - the dovecot versions in play are probably too far apart and we also switched the underlying MTA. So here is a more robust solution: doveadm import
Assuming ...
- 215
8
votes
Migrating from any IMAP/POP3 server to Dovecot
You can also do the following on the command-line without configuration files:
# doveadm -Dv \
-o imapc_host=<SOURCE_HOST> \
-o imapc_user=<SOURCE_USERNAME> \
-o imapc_password=<...
- 81
8
votes
Accepted
Setting up mail accounts without real Linux users
Honest advice, use normal user accounts and let your Linux system authenticate the users. This is easy to manage and very secure. I don't want to say that other systems are insecure but I trust my ...
- 422
8
votes
Accepted
Dovecot cant connect to imaps 993
Solution
The problem was in fact a configuration issue, which was commented on by dovecot itself in /var/log/syslog:
Jan 14 17:34:23 mysite dovecot: imap-login: Fatal: Can't load ssl_cert: There is ...
8
votes
Accepted
What are the correct dovecot file permissions for /etc/dovecot on Ubuntu 18.04?
The systemd unit, which controls dovecot has ProtectSystem set to full or strict, which prevents the processes from writing to /etc.
Add to the unit file /etc/systemd/system/multi-user.target.wants/...
- 253
7
votes
Gmail flagging Dovecot email as insecure
Your email is sent unencrypted.
If you just want to try your best add the following to your main.cf
smtp_tls_security_level = may
To enforce TLS encryption for email sent to google add this to your ...
- 569
7
votes
Accepted
Do Postfix and Dovecot support OCSP stapling?
As of 2017-10, No.
Dovecot does not have any OCSP support whatsoever, as of 2016 was considering the feature for a future release, no work has been done on that since.
Postfix does not have any OCSP ...
- 9,783
7
votes
Set up certs for multiple domains in Postfix and Dovecot
To my knowledge, this is not possible. You have two options:
Use one domain as the MX for all your other domains that the server should handle. So, if you have a cert configured for example.com and ...
- 99.6k
6
votes
How do I setup a SENT and TRASH folder with Dovecot?
I got a similar problem, the Samsung Android app was creating its own TRASH folder, instead of using the existing Trash one. After fixing it, as described below, I had to remove then add again the ...
- 183
6
votes
Dovecot: autocreate plugin is deprecated, use mailbox { auto } setting
I just started experimenting with this myself, but I believe that in your case you need to replace these lines:
protocol imap {
mail_plugins = "autocreate"
}
plugin {
autocreate = Trash
...
- 251
6
votes
dovecot mail storage auto detection failed
I fixed this. I needed to uncomment the mail_location in 10-auth.conf i believe to point to the mbox (as it says in the file, because this is a new user there is no mailbox yet. After you also need to ...
- 129
6
votes
Manage multiple account from just one
You need to be aware that POP3 & IMAP (implemented by Dovecot) are protocols for accessing mailboxes while SMTP (implemented by Postfix) is for sending and receiving mail. Instead of trying to ...
- 49.8k
Only top scored, non community-wiki answers of a minimum length are eligible