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Roundcube connection to storage server failed [Fixed]

3 min. read

Updated onOctober 4, 2023

updated onOctober 4, 2023

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Key notes

Roundcube is a free and open-source solution for webmail that is based on a desktop-like interface. Unfortunately, many users reportedRoundcube connection tostorageserverfailedmessage.

What does connection tostorageserverfailedmean?

Thiserror messageis related to Dovecot, and if you see it, it means that Dovecot isn’t running on the server.

However, this issue can be resolved by using one of the solutions bellow.

How can I fix Roundcube connection to storage server failed error?

1. Delete all Dovecot index files

This solution is useful if the index files are for older versions of this software. As a result, they don’t work together with new Dovecot versions.

This solutions can come in handy if you’ve updated Dovecot recently and you are encountering issues.

After deleting all Dovecot index files, the software will notice they are missing, and create them again. Before doing anything, be sure to create a backup.

This is a simple solution, and it should help you withConnection to storageserverfailedin Roundcube on Ubuntu.

2. Add commands to Dovecot’s .conf file

You must apply this solution if Dovecot has reached his per-IP limit. You will be able to recognize this situation if you receive the following message:

imap-login: Maximum number of connections from user+IP exceeded (mail_max_userip_connections=10)

Try this solution if you encounterRoundcube connection to storageserverfailederror in Debian.

3. Increase imap process limit

You will view the followingerror messagethat requires to use this solution and increase the imap process limit:

master: Warning:service(imap-login): process_limit (100) reached, client connections are being dropped

After making these changes, check if theRoundcube connection to storage server failedmessage is gone.

4. Verify logs

Verify Apache logs

You must search for the following lines that show theerror:

cd /var/log/httpdtail -n 20 error_logtail -n 20 domains/domain.com.logtail -n 20 domains/domain.com.error.log

Verify Dovecot logs

Seek the following lines in Dovecot:

tail -n20 /var/log/maillog

5. Verify accuracy of localhost data

127.0.0.1 localhost

If you’re gettingConnection to storageserverfailedin Docker, be sure to try this solution.

6. Run ./buildtodovecot

If the/etc/virtual/domain.compasswdis not in the right format, this will cause theRoundcube connection to storage server failederror. This file should have 7 columns that are separated by colons.

When you notice the/etc/virtual/domain.compasswdfile has only 2 columns and 1 colon, it will be necessary to input the ./buildtodovecot command.

Roundcube connection to storageserverfailedis anerrorrelated to Dovecot, but hopefully, you should be able to fix it with our solutions.

Did you find a solution on your own? If so, feel free to share it with us in the comments section.

Roundcube connection to storage server failed [Fixed]#

How can I fix Roundcube connection to storage server failed error?#

1. Delete all Dovecot index files#

2. Add commands to Dovecot’s .conf file#

3. Increase imap process limit#

4. Verify logs#

5. Verify accuracy of localhost data#

6. Run ./buildtodovecot#