Courier IMAP setup and Delete

Steps to reproduce

Attempt to setup IMAP account (using different agents: Firefox, Chrome, Edge)
Delete email after setup

Actual behaviour

When attempting to setup an email account (on Courier-based Server):

If the account has already been used by another mail client, Setup fails with message: "Error while loading the Selected Account" and no folders are visible or accessible;
If an account on that Server has not been used before by any other client, it will connect and display as expected, however, will not allow deletion of emails with message: "Error while deleting message.

Setting up other accounts on different mail servers works without issue.

Mail app

**Mail app version: 0.7.9

**Mailserver or service: standard ISP using Courier/Postfix

**Transport security - IMAP: None, SSL, TLS, STARTTLS all tried.

**Transport security - SMTP: None, SSL, TLS, STARTTLS all tried

**Number of accounts: 2

Mail app version build date: (only if you are using a Nightly Build)

Server configuration

Operating system: Linux 3.10.0-693.17.1.el7.x86_64 #1 SMP Thu Jan 25 20:13:58 UTC 2018 x86_64

Webserver: Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips PHP/5.4.16 (fpm-fcgi)

Database: mysql 5.5.56

PHP version: 5.6.25
Modules loaded: Core, date, ereg, libxml, openssl, pcre, zlib, filter, hash, Reflection, SPL, session, standard, cgi-fcgi, bz2, calendar, ctype, curl, dom, mbstring, fileinfo, ftp, gd, gettext, iconv, intl, ldap, exif, mysqlnd, PDO, Phar, posix, shmop, SimpleXML, sockets, sqlite3, sysvmsg, sysvsem, sysvshm, tokenizer, xml, xmlwriter, xsl, zip, mysql, mysqli, pdo_mysql, pdo_sqlite, wddx, xmlreader, json, smbclient, mhash, libsmbclient

Nextcloud version: 12.0.4 - 12.0.4.3

Updated from an older version or fresh install: Fresh

List of activated apps:
Enabled:

activity: 2.5.2
announcementcenter: 3.1.1
calendar: 1.5.7
comments: 1.2.0
contacts: 2.0.1
dav: 1.3.0
deck: 0.3.0
federatedfilesharing: 1.2.0
federation: 1.2.0
files: 1.7.2
files_accesscontrol: 1.2.5
files_external: 1.3.0
files_pdfviewer: 1.1.1
files_sharing: 1.4.0
files_texteditor: 2.4.1
files_trashbin: 1.2.0
files_versions: 1.5.0
files_videoplayer: 1.1.0
firstrunwizard: 2.1
gallery: 17.0.0
groupfolders: 1.2.0
issuetemplate: 0.3.0
logreader: 2.0.0
lookup_server_connector: 1.0.0
mail: 0.7.9
nextcloud_announcements: 1.1
notes: 2.3.2
notifications: 2.0.0
oauth2: 1.0.5
onlyoffice: 1.2.0
password_policy: 1.2.2
provisioning_api: 1.2.0
serverinfo: 1.2.0
sharebymail: 1.2.0
socialsharing_email: 1.0.3
survey_client: 1.0.0
systemtags: 1.2.0
tasks: 0.9.5
telephoneprovider: 1.0.1
theming: 1.3.0
twofactor_backupcodes: 1.1.1
updatenotification: 1.2.0
user_ldap: 1.2.1
w2g2: 0.9.9
workflowengine: 1.2.0

If you have access to your command line run e.g.:
sudo -u www-data php occ app:list
from within your server installation folder

The content of config/config.php:

{ "passwordsalt": "***REMOVED SENSITIVE VALUE***", "secret": "***REMOVED SENSITIVE VALUE***", "trusted_domains": [ "localhost", "server..lan", "192.168.1.253", "203..*.*.*", "office..com.au", "office..com.au" ], "datadirectory": "\/var\/lib\/nethserver\/nextcloud\/", "overwrite.cli.url": "http:\/\/localhost", "dbtype": "mysql", "version": "12.0.4.3", "dbname": "nextcloud", "dbhost": "localhost", "dbport": "", "dbtableprefix": "oc_", "dbuser": "***REMOVED SENSITIVE VALUE***", "dbpassword": "***REMOVED SENSITIVE VALUE***", "logtimezone": "UTC", "installed": true, "instanceid": "ocg7qndbq9bd", "ldapIgnoreNamingRules": false, "ldapProviderFactory": "\\OCA\\User_LDAP\\LDAPProviderFactory", "maintenance": false, "loglevel": 2, "mail_domain": ".com.au", "mail_smtpmode": "php", "mail_smtpauthtype": "LOGIN", "mail_from_address": "nextcloud" } ```

Client configuration

Browser: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0

**Operating system:**Win10 x64

Logs

Web server error log

Insert your webserver log here

Server log (data/nextcloud.log)

``` Setup Fail: {"reqId":"Wm7K33ASFENau6ZTtWWHDwAAAAo","level":3,"time":"2018-01-29T07:18:56+00:00","remoteAddr":"202.14.148.23","user":"9B875F98-B0DF-4EDA-A5EF-0E3C8641C4A6","app":"index","method":"GET","url":"\/nextcloud\/index.php\/apps\/mail\/api\/accounts\/10\/folders","message":"Exception: {\"Exception\":\"Horde_Imap_Client_Exception_ServerResponse\",\"Message\":\"IMAP error reported by server.\",\"Code\":0,\"Trace\":\"#0 \\\/usr\\\/share\\\/nextcloud\\\/apps\\\/mail\\\/vendor\\\/pear-pear.horde.org\\\/Horde_Imap_Client\\\/Horde\\\/Imap\\\/Client\\\/Socket.php(4302): Horde_Imap_Client_Socket->_getLine(Object(Horde_Imap_Client_Interaction_Pipeline))\\n#1 \\\/usr\\\/share\\\/nextcloud\\\/apps\\\/mail\\\/vendor\\\/pear-pear.horde.org\\\/Horde_Imap_Client\\\/Horde\\\/Imap\\\/Client\\\/Socket.php(4230): Horde_Imap_Client_Socket->_sendCmdChunk(Object(Horde_Imap_Client_Interaction_Pipeline), Array)\\n#2 \\\/usr\\\/share\\\/nextcloud\\\/apps\\\/mail\\\/vendor\\\/pear-pear.horde.org\\\/Horde_Imap_Client\\\/Horde\\\/Imap\\\/Client\\\/Socket.php(1751): Horde_Imap_Client_Socket->_sendCmd(Object(Horde_Imap_Client_Interaction_Pipeline))\\n#3 \\\/usr\\\/share\\\/nextcloud\\\/apps\\\/mail\\\/vendor\\\/pear-pear.horde.org\\\/Horde_Imap_Client\\\/Horde\\\/Imap\\\/Client\\\/Base.php(1728): Horde_Imap_Client_Socket->_status(Array, 8205)\\n#4 \\\/usr\\\/share\\\/nextcloud\\\/apps\\\/mail\\\/vendor\\\/pear-pear.horde.org\\\/Horde_Imap_Client\\\/Horde\\\/Imap\\\/Client\\\/Base.php(4034): Horde_Imap_Client_Base->status('INBOX.customfla...', 8713)\\n#5 \\\/usr\\\/share\\\/nextcloud\\\/apps\\\/mail\\\/vendor\\\/pear-pear.horde.org\\\/Horde_Imap_Client\\\/Horde\\\/Imap\\\/Client\\\/Base.php(3585): Horde_Imap_Client_Base->_syncStatus('INBOX.customfla...')\\n#6 \\\/usr\\\/share\\\/nextcloud\\\/apps\\\/mail\\\/lib\\\/Service\\\/FolderMapper.php(56): Horde_Imap_Client_Base->getSyncToken('INBOX.customfla...')\\n#7 \\\/usr\\\/share\\\/nextcloud\\\/apps\\\/mail\\\/lib\\\/Service\\\/MailManager.php(70): OCA\\\\Mail\\\\Service\\\\FolderMapper->getFolders(Object(OCA\\\\Mail\\\\Account), Object(Horde_Imap_Client_Socket))\\n#8 \\\/usr\\\/share\\\/nextcloud\\\/apps\\\/mail\\\/lib\\\/Controller\\\/FoldersController.php(71): OCA\\\\Mail\\\\Service\\\\MailManager->getFolders(Object(OCA\\\\Mail\\\\Account))\\n#9 [internal function]: OCA\\\\Mail\\\\Controller\\\\FoldersController->index(10)\\n#10 \\\/usr\\\/share\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Http\\\/Dispatcher.php(160): call_user_func_array(Array, Array)\\n#11 \\\/usr\\\/share\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Http\\\/Dispatcher.php(90): OC\\\\AppFramework\\\\Http\\\\Dispatcher->executeController(Object(OCA\\\\Mail\\\\Controller\\\\FoldersController), 'index')\\n#12 \\\/usr\\\/share\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/App.php(114): OC\\\\AppFramework\\\\Http\\\\Dispatcher->dispatch(Object(OCA\\\\Mail\\\\Controller\\\\FoldersController), 'index')\\n#13 \\\/usr\\\/share\\\/nextcloud\\\/lib\\\/private\\\/AppFramework\\\/Routing\\\/RouteActionHandler.php(47): OC\\\\AppFramework\\\\App::main('FoldersControll...', 'index', Object(OC\\\\AppFramework\\\\DependencyInjection\\\\DIContainer), Array)\\n#14 [internal function]: OC\\\\AppFramework\\\\Routing\\\\RouteActionHandler->__invoke(Array)\\n#15 \\\/usr\\\/share\\\/nextcloud\\\/lib\\\/private\\\/Route\\\/Router.php(299): call_user_func(Object(OC\\\\AppFramework\\\\Routing\\\\RouteActionHandler), Array)\\n#16 \\\/usr\\\/share\\\/nextcloud\\\/lib\\\/base.php(1004): OC\\\\Route\\\\Router->match('\\\/apps\\\/mail\\\/api\\\/...')\\n#17 \\\/usr\\\/share\\\/nextcloud\\\/index.php(48): OC::handleRequest()\\n#18 {main}\",\"File\":\"\\\/usr\\\/share\\\/nextcloud\\\/apps\\\/mail\\\/vendor\\\/pear-pear.horde.org\\\/Horde_Imap_Client\\\/Horde\\\/Imap\\\/Client\\\/Socket.php\",\"Line\":4590}","userAgent":"Mozilla\/5.0 (Windows NT 10.0; Win64; x64; rv:57.0) Gecko\/20100101 Firefox\/57.0","version":"12.0.4.3"}

Delete Fail:

{"reqId":"Wm7MtrW1WK-F1rjx1V280wAAAAs","level":3,"time":"2018-01-29T07:26:47+00:00","remoteAddr":"202.14.148.23","user":"9B875F98-B0DF-4EDA-A5EF-0E3C8641C4A6","app":"index","method":"DELETE","url":"/nextcloud/index.php/apps/mail/api/accounts/9/folders/SU5CT1g%3D/messages/1","message":"Exception: {"Exception":"Horde_Imap_Client_Exception_ServerResponse","Message":"IMAP error reported by server.","Code":0,"Trace":"#0 \/usr\/share\/nextcloud\/apps\/mail\/vendor\/pear-pear.horde.org\/Horde_Imap_Client\/Horde\/Imap\/Client\/Socket.php(4302): Horde_Imap_Client_Socket->_getLine(Object(Horde_Imap_Client_Interaction_Pipeline))\n#1 \/usr\/share\/nextcloud\/apps\/mail\/vendor\/pear-pear.horde.org\/Horde_Imap_Client\/Horde\/Imap\/Client\/Socket.php(4230): Horde_Imap_Client_Socket->_sendCmdChunk(Object(Horde_Imap_Client_Interaction_Pipeline), Array)\n#2 \/usr\/share\/nextcloud\/apps\/mail\/vendor\/pear-pear.horde.org\/Horde_Imap_Client\/Horde\/Imap\/Client\/Socket.php(3678): Horde_Imap_Client_Socket->_sendCmd(Object(Horde_Imap_Client_Interaction_Pipeline))\n#3 \/usr\/share\/nextcloud\/apps\/mail\/vendor\/pear-pear.horde.org\/Horde_Imap_Client\/Horde\/Imap\/Client\/Base.php(2957): Horde_Imap_Client_Socket->_copy(Object(Horde_Imap_Client_Mailbox), Array)\n#4 \/usr\/share\/nextcloud\/apps\/mail\/lib\/Account.php(464): Horde_Imap_Client_Base->copy(Object(Horde_Imap_Client_Mailbox), Object(Horde_Imap_Client_Mailbox), Array)\n#5 \/usr\/share\/nextcloud\/apps\/mail\/lib\/Controller\/MessagesController.php(357): OCA\\Mail\\Account->deleteMessage('INBOX', '1')\n#6 [internal function]: OCA\\Mail\\Controller\\MessagesController->destroy(9, 'SU5CT1g=', '1')\n#7 \/usr\/share\/nextcloud\/lib\/private\/AppFramework\/Http\/Dispatcher.php(160): call_user_func_array(Array, Array)\n#8 \/usr\/share\/nextcloud\/lib\/private\/AppFramework\/Http\/Dispatcher.php(90): OC\\AppFramework\\Http\\Dispatcher->executeController(Object(OCA\\Mail\\Controller\\MessagesController), 'destroy')\n#9 \/usr\/share\/nextcloud\/lib\/private\/AppFramework\/App.php(114): OC\\AppFramework\\Http\\Dispatcher->dispatch(Object(OCA\\Mail\\Controller\\MessagesController), 'destroy')\n#10 \/usr\/share\/nextcloud\/lib\/private\/AppFramework\/Routing\/RouteActionHandler.php(47): OC\\AppFramework\\App::main('MessagesControl...', 'destroy', Object(OC\\AppFramework\\DependencyInjection\\DIContainer), Array)\n#11 [internal function]: OC\\AppFramework\\Routing\\RouteActionHandler->__invoke(Array)\n#12 \/usr\/share\/nextcloud\/lib\/private\/Route\/Router.php(299): call_user_func(Object(OC\\AppFramework\\Routing\\RouteActionHandler), Array)\n#13 \/usr\/share\/nextcloud\/lib\/base.php(1004): OC\\Route\\Router->match('\/apps\/mail\/api\/...')\n#14 \/usr\/share\/nextcloud\/index.php(48): OC::handleRequest()\n#15 {main}","File":"\/usr\/share\/nextcloud\/apps\/mail\/vendor\/pear-pear.horde.org\/Horde_Imap_Client\/Horde\/Imap\/Client\/Socket.php","Line":4590}","userAgent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0","version":"12.0.4.3"}

</details>

##### Horde IMAP log (data/horde_imap.log)
<details>

Failed Account Setup:

>> Mon, 29 Jan 2018 12:45:36 +0000
>> Connection to: imap://mail.iig.com.au:993/
>> Server connection took 0.1485 seconds.
S: * OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT AUTH=PLAIN ACL ACL2=UNION] Courier-IMAP ready. Copyright 1998-2004 Double Precision, Inc.  See COPYING for distribution information.
C: 1 [INITIAL CLIENT RESPONSE (username: cns02***)]
S: +
C: Y25zMDI2MDgAY25zMDI2MDgAMjYwOHRpa2E=
S: 1 OK LOGIN Ok.
>> Command 1 took 0.0726 seconds.
C: 2 CAPABILITY
S: * CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT AUTH=PLAIN ACL ACL2=UNION
S: 2 OK CAPABILITY completed
>> Command 2 took 0.0329 seconds.
C: 3 LOGOUT
S: * BYE Courier-IMAP server shutting down
S: 3 OK LOGOUT completed
>> Command 3 took 0.0326 seconds.


Failed Item Delete:

>> Mon, 29 Jan 2018 12:47:07 +0000
>> Connection to: imap://mail.iig.com.au/
>> Server connection took 0.0322 seconds.
S: * OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT ACL ACL2=UNION] Courier-IMAP ready. Copyright 1998-2004 Double Precision, Inc.  See COPYING for distribution information.
C: 1 LOGIN mbx15** [PASSWORD]
S: 1 OK LOGIN Ok.
>> Command 1 took 0.0448 seconds.
C: 2 CAPABILITY
S: * CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT ACL ACL2=UNION
S: 2 OK CAPABILITY completed
>> Command 2 took 0.0321 seconds.
C: 3 LIST "" *
S: * LIST (\HasNoChildren) "." "INBOX.Drafts"
S: * LIST (\HasNoChildren) "." "INBOX.Deleted Items"
S: * LIST (\HasNoChildren) "." "INBOX.Sent Items"
S: * LIST (\Unmarked \HasChildren) "." "INBOX"
S: 3 OK LIST completed
>> Command 3 took 0.0325 seconds.
C: 4 SELECT INBOX
S: * FLAGS (\Draft \Answered \Flagged \Deleted \Seen \Recent)
S: * OK [PERMANENTFLAGS (\* \Draft \Answered \Flagged \Deleted \Seen)] Limited
S: * 4 EXISTS
S: * 0 RECENT
S: * OK [UIDVALIDITY 1516931820] Ok
S: * OK [MYRIGHTS "acdilrsw"] ACL
S: 4 OK [READ-WRITE] Ok
>> Command 4 took 0.2298 seconds.
C: 5 UID COPY 1 Trash
S: 5 NO Error in IMAP command received by server.
>> Command 5 took 0.0328 seconds.
C: 6 LOGOUT
S: * BYE Courier-IMAP server shutting down
S: 6 OK LOGOUT completed
>> Command 6 took 0.0323 seconds.

Horde SMTP log (data/horde_smtp.log)

``` Insert your horde SMTP log here, see https://github.com/nextcloud/mail#debug-mode ```

Browser log

``` Insert your browser log here, this could for example include:

a) The javascript console log
b) The network log
c) ...

</details>


<bountysource-plugin>

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Description

Steps to reproduce

Actual behaviour

Mail app

Server configuration

Client configuration

Logs

Web server error log

Server log (data/nextcloud.log)

Horde SMTP log (data/horde_smtp.log)

Browser log

Contributor guide

First steps

Research direction

Assessment

Courier IMAP setup and Delete

Description

Steps to reproduce

Actual behaviour

Mail app

Server configuration

Client configuration

Logs

Web server error log

Server log (data/nextcloud.log)

Horde SMTP log (data/horde_smtp.log)

Browser log

Contributor guide

First steps

Research direction

Assessment

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