Thats definitely not a problem with Roundcube. Its most likely a problem with a firewall or routing rule on your network. I see that your using Roundcube in cPanel and that requires that you can access port 2096 if that is blocked it maybe the source of your problem but I don't think we'll be able to help here.

Dear roundcube dev,

The master branch contains many issue fixed and improvement achieve, compared to the lastest release (1.6.10),
If we refer of [unreleased](https://github.com/roundcube/roundcubemail/blob/master/CHANGELOG.md#unreleased), it's 70 issue fixed with many improvement, specify in the OAuth part:

Do you think, you can release a new version ?

Details of unreleased:
- Set minimum required PHP version to 8.1 (#9599)
- Update to jQuery 3.7.1
- Drop dependency on JsTimeZoneDetect (#8965)
- Renamed composer.json.dist to composer.json (#9279)
- Make public_html/ entry-point mandatory, all static resources are served via static.php (#9294, #8851)
- Removed support for MS SQL Server and Oracle (#7854)
- Store uploads metadata in a separate sql database table instead of a session (#8415)
- Mouse-over menu on messages list (#7141)
- Advanced mail search syntax with more possibilities (without UI) (#8502)
- Added an option for a default mail search scope (#9077, #7556)
- Added option to define font list and font-size list for HTML editor - available_fonts/available_font_sizes (#5700)
- IMAP: Support for HAproxy protocol header in IMAP connections (#8625)
- Change 'smtp_log' option default value to False
- Add 'php' logging driver (#6138)
- Delete messages directly from Junk on folder purge if delete_junk is enabled (#8766)
- Hide information about quota, when there is no quota (#8994)
- Set timeout=30, connect_timeout=5, read_timeout=120 as defaults for HTTP client (#8865)
- Remove use of utf8_encode() and utf8_decode() functions deprecated in PHP 8.2
- Support PHP Zip extension and 7z in install-jsdeps.sh (#8935)
- Add identities management script - bin/identity.sh (#8887)
- Add skin information into the About dialog (#9441)
- Prefer 8bit over quoted-printable for HTML parts, when force_7bit is disabled (#8477)
- Convert images in HTML content pasted into HTML editor to `data:` URIs (and later to attachments) (#6938)
- Add possibility to change ATTR_EMULATE_PREPARES via config file (#9213)
- Use draft settings (like DSN) on "Edit as new" (#9349)
- Add more detailed feedback on vCard import errors (#9591)
- Use new HTML5 parser available on PHP >= 8.4
- Clear "list is empty" message on loading a new list (#9006)
- Add `enable_autolink` option for HTML editor (#9818, #9762)
- Installer: Show NOT OK if none of the database extensions is installed (#9594, #9604)
- Plugin API: Added message_delete hook (#9499)
- Plugin API: Added message_move hook (#9499)
- Mailvelope: Add a button to enable the extension for webmail domain (#9498)
- OAuth: Add support for SMTP without authentication (#9183)
- OAuth: Add support for OAuth/OpenIDC discovery (#8201)
- OAuth: Add support for invalidating the OAuth-session on logout (#8057)
- OAuth: Add support for OpenID Connect RP-Initiated Logout (#9109)
- OAuth: Add support for OpenID Connect Back-Channel Logout (#9110)
- OAuth: Add support for PKCE (#8757)
- OAuth: Add support for OAUTHBEARER (#9217)
- OAuth: Add `oauth_debug` option (#9217)
- OAuth: Fix: missing config `oauth_provider_name` in rcmail_oauth's constructor (#9217)
- OAuth: Fix Bearer authentication for Kinde (#9244)
- OAuth: Refactor: move display to the rcmail_oauth class and use `loginform_content` hook (#9217)
- OAuth: Add a flag to the 'authenticate' hook arguments indicating SSO is in use
- Additional_Message_Headers: Added %u, %d and %l variables (#8746, #8732)
- ACL: Set default of 'acl_specials' option to ['anyone'] (#8911)
- Enigma: Support Kolab's Web Of Anti-Trust feature (#8626)
- Managesieve: Support :encodeurl (RFC 5435) (#8917)
- Managesieve: Add List-ID to the list of headers for creating new sieve-filters (#8307)
- Managesieve: Support an array in managesieve_host option (#9447)
- Managesieve: Fix the frontend datetime picker not respecting the 12h format and apending a dangling 's' to the seconds (#9688)
- Managesieve: Add parsing for all PHP time formatters from `time_format` config to frontend the time picker (#9655)
- Password: Add `ldap_samba_ad` driver (#8525)
- Password: Allow LDAP access using LDAP URI and SASL binding (#8402)
- Password: Use Guzzle HTTP Client in the `pwned` driver
- Password: Use Guzzle HTTP Client in the `directadmin` driver
- Password: Use Guzzle HTTP Client in the `plesk` driver
- Password: Use Guzzle HTTP Client in the `modoboa` driver
- Password: Use Guzzle HTTP Client in the `domainfactory` driver
- Password: Use Guzzle HTTP Client in the `cpanel` driver
- Password: Check that a user email is part of password in the `zxcvbn` checker (#9404)
- Fix folders hierarchy when special folders are subfolders of INBOX, with no personal namespace prefix (#9452)
- Fix attachment name decoding when 'charset' parameter exists in the headers (#9376)
- Fix deprecated (in PHP 8.4) use of session_set_save_handler() (#9060)
- Fix potential HTTP protocol version mismatch (#8982)
- Managesieve: Fix match-type selector (remove unsupported options) in delete header action (#9610)
- Improve installer to fix confusion about disabling SMTP authentication (#9801)
- Fix PHP warning in index.php (#9813)
- OAuth: Fix/improve token refresh

"There is no connection to the site. Host euvip05.twinservers.net:2096/cpsess6455258484/3rdparty/roundcube/?_task=mail&_mbox=INBOX.Sent does not respond for a long time". And this problem just with our wifi, when we connect to another network site works and loads immediately

This is unlikely to be a Roundcube problem, what error exactly are you getting?

We can't access our corporate email through WiFi, the provider said that nothing is blocked in their side, maybe its the problem from roundcube side. What the problem it can be? And how we can solve this problem? Help us please. Our provider is VEGA IP Address is 83.218.237.62

The short answer is probably yes but can you tell me what settings you are using for "Import group assignments" and "Replace the entire address book"?

Semicolon should be good as a group list delimiter so I'm wondering if something else about how existing contacts are detected/ignored could be the issue.

Also what version of Roundcube?

I am trying to import contacts that have multiple Groups assigned but I cannot successfully get all the groups in. Sometimes some work properly but when I rerun same file I get different results. A sample file is below.

First Name,Last Name,E-mail Address,Categories,
Christine,Adams,[email protected],MMM-1,
Andrew,Adamson,[email protected],Members;MMM-1,
Avril,Adamson,[email protected],Members;MMM-1,
Di,Agar,[email protected],,
David,Agar,[email protected],Members,


Is there a trick to this?

Sorry for the late response, some private issues needed my attention...

Anyhow, sounds great, I will try. Let me see where I can get v1.6 for AlmaLinux9.

Thanks a lot!

Is sounds like the web server is not handling PHP files correctly. If you have access to the server check the web server config, if you don't then you should contact your email provider for support.

Dear folks, since yesterday, I am unable to access roundcube. Trying to do so, I get "Download" in the upper right corner. When I click on it, I get a lot of technical infos which I cannot handle... Who has an idea please? I'm quite desperate, as I need to write Mails for my association for the cause of Tibet! Thanks so much!