Articles related to mail service in Plesk including webmail.
- An IP address of a Plesk mail server got blacklisted. How to troubleshoot?
- Emails sent from a Plesk server to mail services like Gmail, Outlook or Yahoo! Mail appear in spam. How to troubleshoot?
- [BUG] The FROM address is replaced by the forwarder email address when the Fix incorrectly set sender for outgoing mail option is enabled
- Unable to send or receive e-mail messages: Client host rejected: cannot find your hostname
- Plesk Premium Email: Unable to access webmail.example.com: Internal Server Error
- Unable to open a maillist on HTTPS: 404 Page Not Found
- Session in Horde webmail client is terminated shortly after login: Your session has expired. Please login again
- Table ‘roundcubemail.session’ doesn’t exist error when accessing Roundcube webmail
- Comodo certificate installed for the mail server. Mail client shows certificate expired
- Unable to log in to RoundCube: Connection to storage server failed
- [FIXED BUG] Unable to send email via PHP: Rejecting message: system user uid='XXXX' is not allowed to send mail
- How to add an email address/domain/top-level domain to the server-wide blacklist
- [FIXED BUG] Unable to create a mailbox in Plesk: mailmng-outgoing failed: ERROR:__main__:NOT NULL constraint failed: mails.domain_id
- Receiving mail from certain server on Plesk for Linux server with Postfix fails: 1408A0C1:SSL routines:ssl3_get_client_hello:no shared cipher:s3_srvr.c:1435:
- Unable to send email via Gmail: TLS Negotiation failed, the certificate doesn't match the host
- Unable to receive mail on example.com
- Unable to select webmail for a domain while webmail software is installed on a server: none
- How to activate mail autodiscover for all existing domains on Plesk server?
- [FIXED BUG] After switching from Courier IMAP to Dovecot emails are duplicated into POP3 account
- [FIXED BUG] Folders with special characters are displayed incorrectly after upgrade to Obsidian 18.0.25
- [FIXED BUG] Outgoing mail report in Plesk shows "Probable spam" warning when there is no spam and vice-versa
- Mails sent with delay: Blocked MTA-BLOCKED {TempFailedInbound}
- Unable to login into Horde on Plesk server: Horde reloads the login page when entering the correct password
- [FIXED BUG] Unable to receive/send mail in Plesk: (!)DENIED ACCESS from IP 203.0.113.2, policy bank
- [FIXED BUG] Cannot send email when Plesk Email Security is installed: 127.0.0.1[127.0.0.1]:10024: Connection refused
- [FIXED BUG] Notifications from Plesk are bounced: duplicate header field "Content-Type"
- Is it possible to have different SMTP banners for different IP addresses on the Plesk server
- Mail autodiscover option is not visible in Mail Server Settings
- How to secure mail the server mail.example.com with Let's Encrypt SSL certificate when the A record for example.com is pointing to another server
- Unable to create a new mailbox: Unable to get default delivery transport string from /var/qmail/mailnames/.default_delivery