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Override the Default Configs | Dovecot
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GHCR
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Configuration
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< label class = "md-nav__title" for = "__nav_3_3" >
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< span class = "md-nav__icon md-icon" > < / span >
User Management
< / label >
< ul class = "md-nav__list" data-md-scrollfix >
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< li class = "md-nav__item" >
< a href = "../../../user-management/accounts/" class = "md-nav__link" >
Accounts
< / a >
< / li >
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< li class = "md-nav__item" >
< a href = "../../../user-management/aliases/" class = "md-nav__link" >
Aliases
< / a >
< / li >
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< / ul >
< / nav >
< / li >
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< li class = "md-nav__item md-nav__item--nested" >
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< input class = "md-nav__toggle md-toggle" data-md-toggle = "__nav_3_4" data-md-state = "indeterminate" type = "checkbox" id = "__nav_3_4" checked >
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< label class = "md-nav__link" for = "__nav_3_4" >
Best Practices
< span class = "md-nav__icon md-icon" > < / span >
< / label >
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< nav class = "md-nav" aria-label = "Best Practices" data-md-level = "2" >
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< label class = "md-nav__title" for = "__nav_3_4" >
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< span class = "md-nav__icon md-icon" > < / span >
Best Practices
< / label >
< ul class = "md-nav__list" data-md-scrollfix >
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< li class = "md-nav__item" >
< a href = "../../../best-practices/dkim/" class = "md-nav__link" >
DKIM
< / a >
< / li >
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< li class = "md-nav__item" >
< a href = "../../../best-practices/dmarc/" class = "md-nav__link" >
DMARC
< / a >
< / li >
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< li class = "md-nav__item" >
< a href = "../../../best-practices/spf/" class = "md-nav__link" >
SPF
< / a >
< / li >
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< li class = "md-nav__item" >
< a href = "../../../best-practices/autodiscover/" class = "md-nav__link" >
Auto-discovery
< / a >
< / li >
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< / ul >
< / nav >
< / li >
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< li class = "md-nav__item md-nav__item--nested" >
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< input class = "md-nav__toggle md-toggle" data-md-toggle = "__nav_3_5" data-md-state = "indeterminate" type = "checkbox" id = "__nav_3_5" checked >
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< label class = "md-nav__link" for = "__nav_3_5" >
Security
< span class = "md-nav__icon md-icon" > < / span >
< / label >
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< nav class = "md-nav" aria-label = "Security" data-md-level = "2" >
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< label class = "md-nav__title" for = "__nav_3_5" >
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< span class = "md-nav__icon md-icon" > < / span >
Security
< / label >
< ul class = "md-nav__list" data-md-scrollfix >
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< li class = "md-nav__item" >
< a href = "../../../security/understanding-the-ports/" class = "md-nav__link" >
Understanding the Ports
< / a >
< / li >
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< li class = "md-nav__item" >
< a href = "../../../security/ssl/" class = "md-nav__link" >
SSL/TLS
< / a >
< / li >
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< li class = "md-nav__item" >
< a href = "../../../security/fail2ban/" class = "md-nav__link" >
Fail2Ban
< / a >
< / li >
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2021-04-18 00:13:06 +00:00
< li class = "md-nav__item" >
< a href = "../../../security/mail_crypt/" class = "md-nav__link" >
Mail Encryption
< / a >
< / li >
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< / ul >
< / nav >
< / li >
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< li class = "md-nav__item md-nav__item--nested" >
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< input class = "md-nav__toggle md-toggle" data-md-toggle = "__nav_3_6" data-md-state = "indeterminate" type = "checkbox" id = "__nav_3_6" checked >
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< label class = "md-nav__link" for = "__nav_3_6" >
Troubleshooting
< span class = "md-nav__icon md-icon" > < / span >
< / label >
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< nav class = "md-nav" aria-label = "Troubleshooting" data-md-level = "2" >
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< label class = "md-nav__title" for = "__nav_3_6" >
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< span class = "md-nav__icon md-icon" > < / span >
Troubleshooting
< / label >
< ul class = "md-nav__list" data-md-scrollfix >
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< li class = "md-nav__item" >
< a href = "../../../troubleshooting/debugging/" class = "md-nav__link" >
Debugging
< / a >
< / li >
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< / ul >
< / nav >
< / li >
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< li class = "md-nav__item" >
< a href = "../../../pop3/" class = "md-nav__link" >
Mail Delivery with POP3
< / a >
< / li >
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< li class = "md-nav__item md-nav__item--active md-nav__item--nested" >
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< input class = "md-nav__toggle md-toggle" data-md-toggle = "__nav_3_8" type = "checkbox" id = "__nav_3_8" checked >
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< label class = "md-nav__link" for = "__nav_3_8" >
Advanced Configuration
< span class = "md-nav__icon md-icon" > < / span >
< / label >
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< nav class = "md-nav" aria-label = "Advanced Configuration" data-md-level = "2" >
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< label class = "md-nav__title" for = "__nav_3_8" >
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< span class = "md-nav__icon md-icon" > < / span >
Advanced Configuration
< / label >
< ul class = "md-nav__list" data-md-scrollfix >
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< li class = "md-nav__item" >
< a href = "../../optional-config/" class = "md-nav__link" >
Optional Configuration
< / a >
< / li >
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< li class = "md-nav__item md-nav__item--nested" >
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< input class = "md-nav__toggle md-toggle" data-md-toggle = "__nav_3_8_2" data-md-state = "indeterminate" type = "checkbox" id = "__nav_3_8_2" checked >
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< label class = "md-nav__link" for = "__nav_3_8_2" >
Maintenance
< span class = "md-nav__icon md-icon" > < / span >
< / label >
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< nav class = "md-nav" aria-label = "Maintenance" data-md-level = "3" >
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< label class = "md-nav__title" for = "__nav_3_8_2" >
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< span class = "md-nav__icon md-icon" > < / span >
Maintenance
< / label >
< ul class = "md-nav__list" data-md-scrollfix >
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< li class = "md-nav__item" >
< a href = "../../maintenance/update-and-cleanup/" class = "md-nav__link" >
Update and Cleanup
< / a >
< / li >
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< / ul >
< / nav >
< / li >
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< li class = "md-nav__item md-nav__item--active md-nav__item--nested" >
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< input class = "md-nav__toggle md-toggle" data-md-toggle = "__nav_3_8_3" type = "checkbox" id = "__nav_3_8_3" checked >
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< label class = "md-nav__link" for = "__nav_3_8_3" >
Override the Default Configs
< span class = "md-nav__icon md-icon" > < / span >
< / label >
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< nav class = "md-nav" aria-label = "Override the Default Configs" data-md-level = "3" >
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< label class = "md-nav__title" for = "__nav_3_8_3" >
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< span class = "md-nav__icon md-icon" > < / span >
Override the Default Configs
< / label >
< ul class = "md-nav__list" data-md-scrollfix >
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< li class = "md-nav__item md-nav__item--active" >
< input class = "md-nav__toggle md-toggle" data-md-toggle = "toc" type = "checkbox" id = "__toc" >
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< label class = "md-nav__link md-nav__link--active" for = "__toc" >
Dovecot
< span class = "md-nav__icon md-icon" > < / span >
< / label >
< a href = "./" class = "md-nav__link md-nav__link--active" >
Dovecot
< / a >
< nav class = "md-nav md-nav--secondary" aria-label = "Table of contents" >
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< label class = "md-nav__title" for = "__toc" >
< span class = "md-nav__icon md-icon" > < / span >
Table of contents
< / label >
< ul class = "md-nav__list" data-md-component = "toc" data-md-scrollfix >
< li class = "md-nav__item" >
< a href = "#add-configuration" class = "md-nav__link" >
Add Configuration
< / a >
< / li >
< li class = "md-nav__item" >
< a href = "#override-configuration" class = "md-nav__link" >
Override Configuration
< / a >
< / li >
< li class = "md-nav__item" >
< a href = "#debugging" class = "md-nav__link" >
Debugging
< / a >
< / li >
< / ul >
< / nav >
< / li >
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< li class = "md-nav__item" >
< a href = "../postfix/" class = "md-nav__link" >
Postfix
< / a >
< / li >
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2021-04-01 20:45:17 +00:00
< li class = "md-nav__item" >
< a href = "../user-patches/" class = "md-nav__link" >
Modifications via Script
< / a >
< / li >
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< / ul >
< / nav >
< / li >
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< li class = "md-nav__item" >
< a href = "../../auth-ldap/" class = "md-nav__link" >
LDAP Authentication
< / a >
< / li >
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2021-09-26 08:38:19 +00:00
2021-03-28 12:40:56 +00:00
< li class = "md-nav__item" >
< a href = "../../mail-sieve/" class = "md-nav__link" >
Email Filtering with Sieve
< / a >
< / li >
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< li class = "md-nav__item" >
< a href = "../../mail-fetchmail/" class = "md-nav__link" >
Email Gathering with Fetchmail
< / a >
< / li >
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2021-09-26 08:38:19 +00:00
2021-03-28 12:40:56 +00:00
< li class = "md-nav__item md-nav__item--nested" >
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< input class = "md-nav__toggle md-toggle" data-md-toggle = "__nav_3_8_7" data-md-state = "indeterminate" type = "checkbox" id = "__nav_3_8_7" checked >
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< label class = "md-nav__link" for = "__nav_3_8_7" >
Email Forwarding
< span class = "md-nav__icon md-icon" > < / span >
< / label >
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< nav class = "md-nav" aria-label = "Email Forwarding" data-md-level = "3" >
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< label class = "md-nav__title" for = "__nav_3_8_7" >
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< span class = "md-nav__icon md-icon" > < / span >
Email Forwarding
< / label >
< ul class = "md-nav__list" data-md-scrollfix >
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< li class = "md-nav__item" >
< a href = "../../mail-forwarding/relay-hosts/" class = "md-nav__link" >
Relay Hosts
< / a >
< / li >
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2021-09-26 08:38:19 +00:00
2021-03-28 12:40:56 +00:00
< li class = "md-nav__item" >
< a href = "../../mail-forwarding/aws-ses/" class = "md-nav__link" >
AWS SES
< / a >
< / li >
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< / ul >
< / nav >
< / li >
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< li class = "md-nav__item" >
< a href = "../../full-text-search/" class = "md-nav__link" >
Full-Text Search
< / a >
< / li >
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2021-09-26 08:38:19 +00:00
2021-03-28 12:40:56 +00:00
< li class = "md-nav__item" >
< a href = "../../kubernetes/" class = "md-nav__link" >
Kubernetes
< / a >
< / li >
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2021-09-26 08:38:19 +00:00
2021-03-28 12:40:56 +00:00
< li class = "md-nav__item" >
< a href = "../../ipv6/" class = "md-nav__link" >
IPv6
< / a >
< / li >
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2021-09-19 16:56:20 +00:00
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2021-09-19 16:56:20 +00:00
< li class = "md-nav__item" >
< a href = "../../podman/" class = "md-nav__link" >
Podman
< / a >
< / li >
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2021-09-19 16:56:20 +00:00
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< / ul >
< / nav >
< / li >
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2021-03-28 12:40:56 +00:00
< / ul >
< / nav >
< / li >
< li class = "md-nav__item md-nav__item--nested" >
< input class = "md-nav__toggle md-toggle" data-md-toggle = "__nav_4" data-md-state = "indeterminate" type = "checkbox" id = "__nav_4" checked >
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< label class = "md-nav__link" for = "__nav_4" >
Examples
< span class = "md-nav__icon md-icon" > < / span >
< / label >
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< nav class = "md-nav" aria-label = "Examples" data-md-level = "1" >
< label class = "md-nav__title" for = "__nav_4" >
< span class = "md-nav__icon md-icon" > < / span >
Examples
< / label >
< ul class = "md-nav__list" data-md-scrollfix >
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< li class = "md-nav__item md-nav__item--nested" >
< input class = "md-nav__toggle md-toggle" data-md-toggle = "__nav_4_1" data-md-state = "indeterminate" type = "checkbox" id = "__nav_4_1" checked >
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< label class = "md-nav__link" for = "__nav_4_1" >
Tutorials
< span class = "md-nav__icon md-icon" > < / span >
< / label >
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< nav class = "md-nav" aria-label = "Tutorials" data-md-level = "2" >
< label class = "md-nav__title" for = "__nav_4_1" >
< span class = "md-nav__icon md-icon" > < / span >
Tutorials
< / label >
< ul class = "md-nav__list" data-md-scrollfix >
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< li class = "md-nav__item" >
< a href = "../../../../examples/tutorials/basic-installation/" class = "md-nav__link" >
Basic Installation
< / a >
< / li >
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2021-09-26 08:38:19 +00:00
2021-03-28 12:40:56 +00:00
< li class = "md-nav__item" >
< a href = "../../../../examples/tutorials/mailserver-behind-proxy/" class = "md-nav__link" >
2021-09-27 07:02:06 +00:00
Mailserver behind Proxy
< / a >
< / li >
< li class = "md-nav__item" >
< a href = "../../../../examples/tutorials/docker-build/" class = "md-nav__link" >
Building your own Docker image
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< / a >
< / li >
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2021-03-28 12:40:56 +00:00
2021-07-30 11:39:16 +00:00
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2021-07-30 11:39:16 +00:00
< li class = "md-nav__item" >
< a href = "../../../../examples/tutorials/blog-posts/" class = "md-nav__link" >
Blog Posts
< / a >
< / li >
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2021-07-30 11:39:16 +00:00
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< / ul >
< / nav >
< / li >
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< li class = "md-nav__item md-nav__item--nested" >
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< svg xmlns = "http://www.w3.org/2000/svg" viewBox = "0 0 24 24" > < path d = "M20.71 7.04c.39-.39.39-1.04 0-1.41l-2.34-2.34c-.37-.39-1.02-.39-1.41 0l-1.84 1.83 3.75 3.75M3 17.25V21h3.75L17.81 9.93l-3.75-3.75L3 17.25z" / > < / svg >
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< h1 > Dovecot< / h1 >
< h2 id = "add-configuration" > < a class = "toclink" href = "#add-configuration" > Add Configuration< / a > < / h2 >
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< p > The Dovecot default configuration can easily be extended providing a < code > docker-data/dms/config/dovecot.cf< / code > file.
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< a href = "https://wiki.dovecot.org" > Dovecot documentation< / a > remains the best place to find configuration options.< / p >
< p > Your < code > docker-mailserver< / code > folder should look like this example:< / p >
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< div class = "highlight" > < pre > < span > < / span > < code > ├── docker-data/dms/config
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│ ├── dovecot.cf
│ ├── postfix-accounts.cf
│ └── postfix-virtual.cf
├── docker-compose.yml
└── README.md
< / code > < / pre > < / div >
< p > One common option to change is the maximum number of connections per user:< / p >
< div class = "highlight" > < pre > < span > < / span > < code > < span class = "na" > mail_max_userip_connections< / span > < span class = "o" > =< / span > < span class = "s" > 100< / span >
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< p > Another important option is the < code > default_process_limit< / code > (defaults to < code > 100< / code > ). If high-security mode is enabled you'll need to make sure this count is higher than the maximum number of users that can be logged in simultaneously.< / p >
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< p > This limit is quickly reached if users connect to the < code > docker-mailserver< / code > with multiple end devices.< / p >
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< h2 id = "override-configuration" > < a class = "toclink" href = "#override-configuration" > Override Configuration< / a > < / h2 >
< p > For major configuration changes it’ < code > volumes< / code > key.< / p >
< div class = "highlight" > < pre > < span > < / span > < code > < span class = "nt" > services< / span > < span class = "p" > :< / span >
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< span class = "nt" > mailserver< / span > < span class = "p" > :< / span >
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< span class = "nt" > volumes< / span > < span class = "p" > :< / span >
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< span class = "p p-Indicator" > -< / span > < span class = "l l-Scalar l-Scalar-Plain" > ./docker-data/dms/mail-data/:/var/mail/< / span >
< span class = "p p-Indicator" > -< / span > < span class = "l l-Scalar l-Scalar-Plain" > ./docker-data/dms/config/dovecot/10-master.conf:/etc/dovecot/conf.d/10-master.conf< / span >
< / code > < / pre > < / div >
< p > You will first need to obtain the configuration from the running container (< em > where < code > mailserver< / code > is the container name< / em > ):< / p >
< div class = "highlight" > < pre > < span > < / span > < code > mkdir -p ./docker-data/dms/config/dovecot
docker cp mailserver:/etc/dovecot/conf.d/10-master.conf ./docker-data/dms/config/dovecot/10-master.conf
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< / code > < / pre > < / div >
< h2 id = "debugging" > < a class = "toclink" href = "#debugging" > Debugging< / a > < / h2 >
< p > To debug your dovecot configuration you can use:< / p >
< ul >
< li > This command: < code > ./setup.sh debug login doveconf | grep < some-keyword> < / code > < / li >
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< li > Or: < code > docker exec -it mailserver doveconf | grep < some-keyword> < / code > < / li >
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< p class = "admonition-title" > Note< / p >
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< p > < a href = "https://github.com/docker-mailserver/docker-mailserver/blob/master/setup.sh" > < code > setup.sh< / code > < / a > is included in the < code > docker-mailserver< / code > repository. Make sure to use the one matching your image version release.< / p >
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< p > The file < code > docker-data/dms/config/dovecot.cf< / code > is copied internally to < code > /etc/dovecot/local.conf< / code > . To verify the file content, run:< / p >
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< div class = "highlight" > < pre > < span > < / span > < code > docker < span class = "nb" > exec< / span > -it mailserver cat /etc/dovecot/local.conf
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