![]() Figure out which server software were used., "cvelist":, "modified": "T00:00:00", "id": "OPENVAS:1361412562310891868", "href": "", "sourceData": "# Copyright (C) 2019 Greenbone Networks GmbH\n# Text descriptions are largely excerpted from the referenced\n# advisory, and are Copyright (C) the respective author(s)\n#\n# SPDX-License-Identifier: GPL-2.0-or-later\n#\n# This program is free software you can redistribute it and/or\n# modify it under the terms of the GNU General Public License\n# as published by the Free Software Foundation either version 2\n# of the License, or (at your option) any later version.If the problem is with sending mail, concentrate on the SMTP server, if with receiving mail, concentrate on the IMAP server.Rule out it's not these client-server connections that are failing. ![]() Check your SquirrelMail configuration and see which servers it connects to.This means in order to debug email delivery, you have to: Some mail server software have everything bundled and some are specialized to provide e.g. message delivery agent (MDA) that delivers the mail to local mailboxes, stores them and allows accessing the mailbox using protocols like the IMAP used in SquirrelMail or Microsoft's MAPI.message transfer agents (MTA) & message submission agents (MSA) builds a network for delivering the mail using the SMTP protocol.Wikipedia article on Email agent (infrastructure) helps with perceiving the overall picture): Fill out the 'To:' and 'Subject:' fields, as well as the body of the email, then click Send to send. On the SquirrelMail home page, click the Compose tab in the top center of the screen. Go to Email Management and click Launch Email on the mailbox you want to use. Slightly simplified, mail servers have two sides (e.g. To compose a new email in SquirrelMail webmail: Log in to your Domains dashboard. With an annual budget of over 1 billion, CISE supports hundreds of diverse academic and research organizations. This depends on which mail servers you are using. National Science Foundation's Directorate for Computer and Information Science and Engineering (CISE) advances research, innovation and education in computer science, information science and computer engineering fields. As a PHP web application it doesn't have own logging, so the information is in the web server logs, usually separated as access and error logs. It doesn't send or receive email, but acts as an IMAP (and SMTP) client. SquirrelMail is an email client, formally mail user agent (MUA) written in PHP. The line that I had to change looked like this: $imap_stream = $imap_port, $error_number, $error_string, 15) īut depending which error you encounter, you will have to change the source code in a different place. Then error messages were finally showing up in the log. What I had to to to find out more details was to search for this error in the SquirrelMail source code, find a function call above it that was prefixed with a remove the and then restart my webserver. In my case, I got an error Error connecting to IMAP server. Unfortunately, it seems that SquirrelMail is deliberately suppressing error messages using the operator, which makes it impossible to tell what is going on. This will cause error messages to be printed out by the Apache process (which in my case is running in a Docker container), but it will not show errors in the browser. ![]() I configured it like this: display_errors = Off ![]() In my case it lies in /usr/local/etc/php/php.ini. Usually this file lies somewhere like /etc/php/php.ini. SquirrelMail is a PHP application, so its logging behaviour is configured in php.ini.
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