Articles related to mail service in Plesk including webmail.
- 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
- Comodo certificate installed for the mail server. Mail client shows certificate expired
- [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
- 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] 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
- Unable to create a new mailbox: Unable to get default delivery transport string from /var/qmail/mailnames/.default_delivery
- Plesk forward emails marked as Spam by SpamAssassin and Plesk server IP becomes blacklisted
- Plesk Obsidian autodiscover does not work with Outlook 365
- SELinux is preventing /usr/libexec/dovecot/auth from 'write' accesses on the file passwd.db
- [FIXED BUG] Mail quota warnings are not sent on Plesk server
- Link to http://www.openspf.org/ returned by Plesk server when SPF validation is failed does not work
- Unable to configure External SMTP Server with a non-email address login in Plesk: Unable to encode IDN email address 'jdoe'
- CVE-2019-12094 and CVE-2019-12095: Horde vulnerabilities
- [FIXED BUG] Plesk email account via Outlook IMAP/POP3 returns the following after syncing: Message appears to be a Unicode message and your E-mail reader did not enable Unicode support.
- Connection is broken with Qmail, DNSBL over 465 TLS is used: Failed to send some messages - javax.net.ssl.SSLProtocolExpeption:SSL handshake aborted
- Unable to send email using PHP mail after Plesk update: Your server might not be configured to send mail using this method