Ubuntu USN · USN-8365-1

Dovecot vulnerabilities

Published: Tue, 02 Jun 2026 12:42

CVE-2026-40020CVE-2026-27851CVE-2026-42006CVE-2026-33603CVE-2026-40016

Summary

Several security issues were fixed in Dovecot.

Details

It was discovered that Dovecot incorrectly treated some variable expansion pipelines as safe in authentication filters. An attacker could possibly use this issue to perform SQL or LDAP injection attacks. This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-27851) It was discovered that Dovecot incorrectly verified SCRAM TLS channel binding in certain base64 exchanges. A remote attacker could possibly use this issue to obtain sensitive information in a machine-in-the-middle attack. (CVE-2026-33603) It was discovered that Dovecot incorrectly enforced Sieve script CPU limits. An attacker could possibly use this issue to cause Dovecot to use excessive resources, leading to a denial of service. (CVE-2026-40016) It was discovered that Dovecot incorrectly handled certain IMAP SETACL commands. An attacker could possibly use this issue to spam folders to other users. (CVE-2026-40020) It was discovered that Dovecot incorrectly handled excessive IMAP bracing. An attacker could possibly use this issue to cause Dovecot to use excessive resources, leading to a denial of service. (CVE-2026-42006)

Recommended actions per Ubuntu release

StackPatch playbook auto-generated per release codename and per affected package.

Ubuntu jammy

dovecot→1:2.3.16+dfsg1-3ubuntu2.9apt_upgrade
Standard apt upgrade. Install 1:2.3.16+dfsg1-3ubuntu2.9 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-auth-lua→1:2.3.16+dfsg1-3ubuntu2.9apt_upgrade
Standard apt upgrade. Install 1:2.3.16+dfsg1-3ubuntu2.9 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-auth-lua
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-core→1:2.3.16+dfsg1-3ubuntu2.9apt_upgrade
Standard apt upgrade. Install 1:2.3.16+dfsg1-3ubuntu2.9 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-core
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-dev→1:2.3.16+dfsg1-3ubuntu2.9apt_upgrade
Standard apt upgrade. Install 1:2.3.16+dfsg1-3ubuntu2.9 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-dev
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-gssapi→1:2.3.16+dfsg1-3ubuntu2.9apt_upgrade
Standard apt upgrade. Install 1:2.3.16+dfsg1-3ubuntu2.9 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-gssapi
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-imapd→1:2.3.16+dfsg1-3ubuntu2.9apt_upgrade
Standard apt upgrade. Install 1:2.3.16+dfsg1-3ubuntu2.9 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-imapd
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-ldap→1:2.3.16+dfsg1-3ubuntu2.9apt_upgrade
Standard apt upgrade. Install 1:2.3.16+dfsg1-3ubuntu2.9 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-ldap
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-lmtpd→1:2.3.16+dfsg1-3ubuntu2.9apt_upgrade
Standard apt upgrade. Install 1:2.3.16+dfsg1-3ubuntu2.9 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-lmtpd
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-lucene→1:2.3.16+dfsg1-3ubuntu2.9apt_upgrade
Standard apt upgrade. Install 1:2.3.16+dfsg1-3ubuntu2.9 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-lucene
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-managesieved→1:2.3.16+dfsg1-3ubuntu2.9apt_upgrade
Standard apt upgrade. Install 1:2.3.16+dfsg1-3ubuntu2.9 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-managesieved
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-mysql→1:2.3.16+dfsg1-3ubuntu2.9apt_upgrade
Standard apt upgrade. Install 1:2.3.16+dfsg1-3ubuntu2.9 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-mysql
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-pgsql→1:2.3.16+dfsg1-3ubuntu2.9apt_upgrade
Standard apt upgrade. Install 1:2.3.16+dfsg1-3ubuntu2.9 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-pgsql
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-pop3d→1:2.3.16+dfsg1-3ubuntu2.9apt_upgrade
Standard apt upgrade. Install 1:2.3.16+dfsg1-3ubuntu2.9 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-pop3d
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-sieve→1:2.3.16+dfsg1-3ubuntu2.9apt_upgrade
Standard apt upgrade. Install 1:2.3.16+dfsg1-3ubuntu2.9 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-sieve
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-solr→1:2.3.16+dfsg1-3ubuntu2.9apt_upgrade
Standard apt upgrade. Install 1:2.3.16+dfsg1-3ubuntu2.9 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-solr
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-sqlite→1:2.3.16+dfsg1-3ubuntu2.9apt_upgrade
Standard apt upgrade. Install 1:2.3.16+dfsg1-3ubuntu2.9 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-sqlite
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-submissiond→1:2.3.16+dfsg1-3ubuntu2.9apt_upgrade
Standard apt upgrade. Install 1:2.3.16+dfsg1-3ubuntu2.9 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-submissiond
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu noble

dovecot→1:2.3.21+dfsg1-2ubuntu6.5apt_upgrade
Standard apt upgrade. Install 1:2.3.21+dfsg1-2ubuntu6.5 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-auth-lua→1:2.3.21+dfsg1-2ubuntu6.5apt_upgrade
Standard apt upgrade. Install 1:2.3.21+dfsg1-2ubuntu6.5 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-auth-lua
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-core→1:2.3.21+dfsg1-2ubuntu6.5apt_upgrade
Standard apt upgrade. Install 1:2.3.21+dfsg1-2ubuntu6.5 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-core
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-dev→1:2.3.21+dfsg1-2ubuntu6.5apt_upgrade
Standard apt upgrade. Install 1:2.3.21+dfsg1-2ubuntu6.5 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-dev
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-gssapi→1:2.3.21+dfsg1-2ubuntu6.5apt_upgrade
Standard apt upgrade. Install 1:2.3.21+dfsg1-2ubuntu6.5 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-gssapi
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-imapd→1:2.3.21+dfsg1-2ubuntu6.5apt_upgrade
Standard apt upgrade. Install 1:2.3.21+dfsg1-2ubuntu6.5 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-imapd
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-ldap→1:2.3.21+dfsg1-2ubuntu6.5apt_upgrade
Standard apt upgrade. Install 1:2.3.21+dfsg1-2ubuntu6.5 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-ldap
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-lmtpd→1:2.3.21+dfsg1-2ubuntu6.5apt_upgrade
Standard apt upgrade. Install 1:2.3.21+dfsg1-2ubuntu6.5 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-lmtpd
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-managesieved→1:2.3.21+dfsg1-2ubuntu6.5apt_upgrade
Standard apt upgrade. Install 1:2.3.21+dfsg1-2ubuntu6.5 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-managesieved
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-mysql→1:2.3.21+dfsg1-2ubuntu6.5apt_upgrade
Standard apt upgrade. Install 1:2.3.21+dfsg1-2ubuntu6.5 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-mysql
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-pgsql→1:2.3.21+dfsg1-2ubuntu6.5apt_upgrade
Standard apt upgrade. Install 1:2.3.21+dfsg1-2ubuntu6.5 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-pgsql
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-pop3d→1:2.3.21+dfsg1-2ubuntu6.5apt_upgrade
Standard apt upgrade. Install 1:2.3.21+dfsg1-2ubuntu6.5 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-pop3d
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-sieve→1:2.3.21+dfsg1-2ubuntu6.5apt_upgrade
Standard apt upgrade. Install 1:2.3.21+dfsg1-2ubuntu6.5 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-sieve
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-solr→1:2.3.21+dfsg1-2ubuntu6.5apt_upgrade
Standard apt upgrade. Install 1:2.3.21+dfsg1-2ubuntu6.5 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-solr
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-sqlite→1:2.3.21+dfsg1-2ubuntu6.5apt_upgrade
Standard apt upgrade. Install 1:2.3.21+dfsg1-2ubuntu6.5 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-sqlite
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-submissiond→1:2.3.21+dfsg1-2ubuntu6.5apt_upgrade
Standard apt upgrade. Install 1:2.3.21+dfsg1-2ubuntu6.5 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-submissiond
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu questing

dovecot→1:2.4.1+dfsg1-5ubuntu4.2apt_upgrade
Standard apt upgrade. Install 1:2.4.1+dfsg1-5ubuntu4.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-auth-lua→1:2.4.1+dfsg1-5ubuntu4.2apt_upgrade
Standard apt upgrade. Install 1:2.4.1+dfsg1-5ubuntu4.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-auth-lua
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-core→1:2.4.1+dfsg1-5ubuntu4.2apt_upgrade
Standard apt upgrade. Install 1:2.4.1+dfsg1-5ubuntu4.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-core
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-dev→1:2.4.1+dfsg1-5ubuntu4.2apt_upgrade
Standard apt upgrade. Install 1:2.4.1+dfsg1-5ubuntu4.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-dev
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-flatcurve→1:2.4.1+dfsg1-5ubuntu4.2apt_upgrade
Standard apt upgrade. Install 1:2.4.1+dfsg1-5ubuntu4.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-flatcurve
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-gssapi→1:2.4.1+dfsg1-5ubuntu4.2apt_upgrade
Standard apt upgrade. Install 1:2.4.1+dfsg1-5ubuntu4.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-gssapi
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-imapd→1:2.4.1+dfsg1-5ubuntu4.2apt_upgrade
Standard apt upgrade. Install 1:2.4.1+dfsg1-5ubuntu4.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-imapd
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-ldap→1:2.4.1+dfsg1-5ubuntu4.2apt_upgrade
Standard apt upgrade. Install 1:2.4.1+dfsg1-5ubuntu4.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-ldap
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-lmtpd→1:2.4.1+dfsg1-5ubuntu4.2apt_upgrade
Standard apt upgrade. Install 1:2.4.1+dfsg1-5ubuntu4.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-lmtpd
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-managesieved→1:2.4.1+dfsg1-5ubuntu4.2apt_upgrade
Standard apt upgrade. Install 1:2.4.1+dfsg1-5ubuntu4.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-managesieved
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-mysql→1:2.4.1+dfsg1-5ubuntu4.2apt_upgrade
Standard apt upgrade. Install 1:2.4.1+dfsg1-5ubuntu4.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-mysql
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-pgsql→1:2.4.1+dfsg1-5ubuntu4.2apt_upgrade
Standard apt upgrade. Install 1:2.4.1+dfsg1-5ubuntu4.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-pgsql
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-pop3d→1:2.4.1+dfsg1-5ubuntu4.2apt_upgrade
Standard apt upgrade. Install 1:2.4.1+dfsg1-5ubuntu4.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-pop3d
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-sieve→1:2.4.1+dfsg1-5ubuntu4.2apt_upgrade
Standard apt upgrade. Install 1:2.4.1+dfsg1-5ubuntu4.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-sieve
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-solr→1:2.4.1+dfsg1-5ubuntu4.2apt_upgrade
Standard apt upgrade. Install 1:2.4.1+dfsg1-5ubuntu4.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-solr
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-sqlite→1:2.4.1+dfsg1-5ubuntu4.2apt_upgrade
Standard apt upgrade. Install 1:2.4.1+dfsg1-5ubuntu4.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-sqlite
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-submissiond→1:2.4.1+dfsg1-5ubuntu4.2apt_upgrade
Standard apt upgrade. Install 1:2.4.1+dfsg1-5ubuntu4.2 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-submissiond
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu resolute

dovecot→1:2.4.2+dfsg1-3ubuntu2.1apt_upgrade
Standard apt upgrade. Install 1:2.4.2+dfsg1-3ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-auth-lua→1:2.4.2+dfsg1-3ubuntu2.1apt_upgrade
Standard apt upgrade. Install 1:2.4.2+dfsg1-3ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-auth-lua
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-core→1:2.4.2+dfsg1-3ubuntu2.1apt_upgrade
Standard apt upgrade. Install 1:2.4.2+dfsg1-3ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-core
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-dev→1:2.4.2+dfsg1-3ubuntu2.1apt_upgrade
Standard apt upgrade. Install 1:2.4.2+dfsg1-3ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-dev
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-flatcurve→1:2.4.2+dfsg1-3ubuntu2.1apt_upgrade
Standard apt upgrade. Install 1:2.4.2+dfsg1-3ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-flatcurve
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-gssapi→1:2.4.2+dfsg1-3ubuntu2.1apt_upgrade
Standard apt upgrade. Install 1:2.4.2+dfsg1-3ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-gssapi
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-imapd→1:2.4.2+dfsg1-3ubuntu2.1apt_upgrade
Standard apt upgrade. Install 1:2.4.2+dfsg1-3ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-imapd
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-ldap→1:2.4.2+dfsg1-3ubuntu2.1apt_upgrade
Standard apt upgrade. Install 1:2.4.2+dfsg1-3ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-ldap
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-lmtpd→1:2.4.2+dfsg1-3ubuntu2.1apt_upgrade
Standard apt upgrade. Install 1:2.4.2+dfsg1-3ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-lmtpd
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-managesieved→1:2.4.2+dfsg1-3ubuntu2.1apt_upgrade
Standard apt upgrade. Install 1:2.4.2+dfsg1-3ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-managesieved
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-mysql→1:2.4.2+dfsg1-3ubuntu2.1apt_upgrade
Standard apt upgrade. Install 1:2.4.2+dfsg1-3ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-mysql
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-pgsql→1:2.4.2+dfsg1-3ubuntu2.1apt_upgrade
Standard apt upgrade. Install 1:2.4.2+dfsg1-3ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-pgsql
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-pop3d→1:2.4.2+dfsg1-3ubuntu2.1apt_upgrade
Standard apt upgrade. Install 1:2.4.2+dfsg1-3ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-pop3d
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-sieve→1:2.4.2+dfsg1-3ubuntu2.1apt_upgrade
Standard apt upgrade. Install 1:2.4.2+dfsg1-3ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-sieve
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-solr→1:2.4.2+dfsg1-3ubuntu2.1apt_upgrade
Standard apt upgrade. Install 1:2.4.2+dfsg1-3ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-solr
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-sqlite→1:2.4.2+dfsg1-3ubuntu2.1apt_upgrade
Standard apt upgrade. Install 1:2.4.2+dfsg1-3ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-sqlite
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
dovecot-submissiond→1:2.4.2+dfsg1-3ubuntu2.1apt_upgrade
Standard apt upgrade. Install 1:2.4.2+dfsg1-3ubuntu2.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y dovecot-submissiond
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

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