41
votes
Accepted
Is there a standard DNS record to indicate the IMAP server for a domain?
From a DNS perspective you have SRV DNS records which allow the use of DNS for publishing services and service discovery. Their main use is to allow services to run easily on non-standard ports and to ...
- 74k
11
votes
UID uniqueness of IMAP mails
A tuple of (folder name, folder UIDVALIDITY, message UID) distinguishes a message from all others in an IMAP account. For any given message, that tuple can change between sessions, so you might want ...
- 241
10
votes
Accepted
Connecting to Hotmail's IMAP Server using Telnet
This is normal; it's exactly the same that happens, if you try to telnet HTTPS 443; the port 993 is for IMAPS, which uses TLS. In TLS connection (from RFC 5246, 7.4.1.2 Client Hello):
When a client ...
- 44.8k
10
votes
Accepted
Get new mails immediately
getmail seems to support IMAP IDLE. So you can write a simple systemd job:
[Unit]
Description=Starts getmail
After=network.target
[Service]
ExecStart=/usr/bin/getmail --idle=INBOX
Restart=on-failure
...
- 732
9
votes
Configure Dovecot to only let localhost connect via imap
The listen = addr:port config is deprecated in newer versions of dovecot. The new way of doing things is with service { inet_listener imap { address = ... } }.
On my system it's in /etc/dovecot/conf....
- 345
9
votes
Accepted
Roundcube + Dovecot: SSL errors when trying to log in
The different meaning of tls:// and ssl:// in $config['default_host'] is unfortunately not documented.
tls:// means usage of STARTTLS, thus usually port 143
ssl:// means usage of TLS, thus usually ...
- 4,263
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
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 ...
- 402
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 ...
7
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=<...
- 71
7
votes
Emptying Trash with Dovecot IMAP
The Plugin that @hostemaster mentioned is not really needed if you don't deal with thousand of users.
Just create an easy script like this:
#!/bin/bash
#
DOVEADM="/usr/local/dovecot/bin/doveadm";
$...
- 203
6
votes
Which IMAP flags are reliably supported across most mail servers?
The main IMAP protocol document is RFC3501. Section 2.3.2 describes the standard flags every IMAP implementation must work with.
Are the system flags sufficiently widely supported that I can
...
- 677
6
votes
Accepted
SquirrelMail showing empty inbox. THIS FOLDER IS EMPTY
I'm not an expert in either dovecot or postfix, but it looks like you have postfix configured to use Maildir style mailboxes, but you're telling dovecot to use mbox style mailboxes.
Take a look at ...
- 493
6
votes
Accepted
PHP CLI not loading IMAP extension
There are separate configuration files for PHP when called via Apache and when called via the CLI.
For example, in Debian (at least), these are in /etc/php5/apache2/php.ini and /etc/php5/cli/php.ini, ...
- 5,456
6
votes
Accepted
Are CNAME "imap..." and "smtp..." subdomains needed?
Unless you plan on growing to the point you need to split your services onto different servers, these are unnecessary. When you do grow to that point, just add new A record for smtp, or even smtp1 ...
- 27.6k
5
votes
Get new mails immediately
fetchmail in daemon mode with IMAP and --idle option may do the trick. Please have a look at man page as it mentions some limitations.
- 3,305
5
votes
Accepted
E-mail transmission example
This is based on a misconseption that the ports have anything to do with encryption. However, I find this a good question, as it gives a chance to correct this misunderstanding.
The ports are not to ...
- 44.8k
4
votes
IMAP standard folder names - "Junk" or "Spam"
Luckily, RFC 6154 IMAP LIST Extension for Special-Use Mailboxes is here to help us, giving some standard mailbox attributes for identifying special-use mailboxes.
\Junk
This mailbox is where ...
- 44.8k
4
votes
Accepted
Problems when launching doveadm
You have doubled imap_acl in the config, dovecot try to link that library twice
protocol imap {
mail_max_userip_connections = 20
mail_plugins = acl imap_acl imap_acl
}
- 6,904
4
votes
Disabling SSLv2 in Courier IMAP
Since SSLv2 and SSLv3 are obsolete for years and TLS is the successor, nowadays you probably want to disable TLS 1.0 and TLS 1.1 in courier. Don't set the TLS_CIPHER_LIST! The default will be fine, it ...
- 2,439
4
votes
Accepted
Haproxy Load Balance IMAP,POP3,SMTP: Unable to use proxy 'imap' with wrong mode, required: http, has: tcp
According to the docs, mode can be set on all sections (backend, frontend, defaults, listen). You have a defaults section mode http. Could this be applying to the frontend sections that don't have ...
- 4,201
4
votes
How do the servers mark the email as read
cPanel uses dovecot as POP3/IMAP server.
Messages that are read are moved from new to cur folder.
From: https://wiki2.dovecot.org/MailboxFormat/Maildir
Directory Structure
By default Dovecot uses ...
- 2,691
4
votes
Accepted
Dovecot imap-login: confusing error? message
Start by checking that the SSL CERT is in order, installed at the correct location and has the correct file owner and mode. 644 for the certificate and 600 for the private key
Then test it manually, ...
- 511
4
votes
Accepted
Mail error 550 Maximum line length exceeded (RFC 5322 2.1.1)
The software which creates the email and submits it is responsible for ensuring that it complies with all relevant standards, such as not having excessively long lines. The mail server is rightly ...
- 241k
4
votes
Accepted
Does email client connect to IMAP/SMTP server by resolving IP through A record or MX record?
When you deal with clients you set the hostname/IP of IMAP/POP/SMTP servers. And the client uses DNS (in case of hostname) to look up the IP address using the A (or AAAA) record of the server(s) you ...
- 4,292
3
votes
Rename Junk folder in dovecot IMAP server
It is not Dovecot recreating the Trash folder; it is your mail client (Outlook in this case).
Some mail clients, when first setting up the definition, will probe the mail server to identify folders ...
- 742
3
votes
RoundCube login to local IMAP server failing
Being confronted with the very same issue, I did a few ours of Google-Foo to get to the root of the issue: As Gabriel assumed correcty in his answer, it's not the fault of Roundcube – but of the way ...
- 349
3
votes
Accepted
Gmail rejecting IMAP calls from AWS EC2 hosted James server
In fact, the problem is simple: your JAMES server is running in an instance that's probably geographically far from where you usually are when you log in to your Gmail account, so it appears to Google ...
- 146
3
votes
How to upload an mbox file to an IMAP server
It is a two-step procedure:
Import the mbox file into a local email folder
Then move (or copy) the newly imported emails to the imap folder
In my case I used Mozilla Thunderbird with the already ...
- 131
3
votes
Migrate IMAP account between providers - client access only
An excellent tool for Windows is MailStore Home (free)
You install it on your PC
then you Archive all your emails from IMAP Account1 on Server1
you simply Export all your previously archived emails ...
- 590
Only top scored, non community-wiki answers of a minimum length are eligible