fa4c4b138e
Update main.cf
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Added the delay_warning_time (http://www.postfix.org/postconf.5.html#delay_warning_time ) with 4 hours as setting. Postfix will inform the user that the e-mail has not been delivered, but that it will try for the next 5 days.
There is also a setting called confirm_delay_cleared (http://www.postfix.org/postconf.5.html#confirm_delay_cleared ), but according to the Postfix this can lead to a sudden burst of notifications at the end of a prolonged network outage.
2019-06-09 07:39:36 +02:00
d5eeb3e8af
Update main.cf
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I was looking into creating a backup mx server for a high availability mailcow setup. It seems that this is not easily done. While researching to find out how long an average SMTP server keeps trying to send to a server that is down I found that RFC 5321 advises at least 4 to 5 days. Mailcow has a custom setup of 1 day, which is very short. The user will be unaware for 5 days that his mail has not been delivered, which can be negative. But I still would like to follow the advice of the RFC.
RFC 5321, in section 4.5.4.1, has this to say:
Retries continue until the message is transmitted or the sender up; the give-up time generally needs to be at least 4-5 days. It MAY be appropriate to set a shorter maximum number of retries for non-delivery notifications and equivalent error messages than for standard messages.
Postfix default is also 5 days: http://www.postfix.org/postconf.5.html
https://tools.ietf.org/html/rfc5321#section-4.5.4
2019-06-08 15:10:46 +02:00
2757c6b5fe
[Postfix] Do not allow DSN for postscreen
2019-05-27 19:32:41 +02:00
9abbe7eb1d
[Postfix] Mandatory protocol for authenticated clients over 587/tcp and 465/tcp is now TLSv1.0+ (reverts previous protocol change for authenticated users only)
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[Postfix] Force route localhost$ over local:
2019-03-06 15:09:28 +01:00
0375703198
[Postfix] Fix mandatory encryption protocols and always require at least TLS 1.2 for LMTP
2019-03-03 12:11:39 +01:00
eccf3ff4da
[Postfix] Mandatory encryption protocol is now min. TLS 1.2
2019-03-03 12:09:10 +01:00
cd72a4e18b
[Postfix] Split SASL passwd maps
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[Postfix] create new smtp service to skip sender-dependent SASL map
[Postfix] Hard-bounce on SASL errors
2018-12-19 09:40:08 +01:00
1dc9d3fa27
[Postfix] Security: Prefer server-side ciphers
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Prefer server-side ciphers to prevent client-side cipher downgrade. Already enabled in Dovecot.
2018-10-25 23:37:25 +02:00
93e0206db4
[Update] Remove mailcow_anonymize_headers.pcre checks
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[Postfix] Rename mailcow_anonymize_headers.pcre > anonymize_headers.pcre to prevent collisions
2018-10-23 22:57:38 +02:00
d99b8aaf69
[Postfix] Change mail_name to Postcow and only replace headers when mail_name matches
2018-10-16 10:26:41 +02:00
a844adde0f
[Postfix] Add mailcow_anonymize_headers to default config
2018-10-15 20:52:06 +02:00
f6b2a6aab2
[Postfix] Enable/create smtp_tls_policy_maps
2018-10-04 14:34:34 +02:00
b8ebdc3c58
[Postfix] Increase default message size limit to 100 MiB
2018-10-01 22:06:20 +02:00
fa0b351da6
[Postfix] smtpd_tls_eecdh_grade = auto
2018-07-11 22:10:32 +02:00
bca8920679
Revert "[Postfix] Default SMTP server security grade for EECDH key exchange"
2018-06-27 23:28:54 +02:00
c386dfc11d
[Postfix] Default SMTP server security grade for EECDH key exchange
2018-06-27 03:39:54 +02:00
a5d40a4ab6
[Postfix] Re-enable TLS 1, 1.1 and some ciphers - real-world tests have shown this setup uses TOO MANY plain text sessions due to compatibility issues
2018-06-25 22:31:23 +02:00
30cea1da9a
[SOGo] Increase workers count to 20
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[Postfix] Add extended TLS header
[Web] Increase timeout to 10 for docker API connections
[Postfix] Add perl package
2018-04-26 14:08:45 +02:00
4405cb3e74
Merge pull request #953 from mkuron/recipient_map
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Expose Postfix's recipient_canonical_maps through web UI
2018-01-28 11:09:22 +01:00
1f08e9a7b7
[Postfix] Fixes #967 (assign correct local network range for mynetworks)
2018-01-27 18:13:35 +01:00
c30448c4d8
Merge branch 'master' of https://github.com/andryyy/mailcow-dockerized into recipient_map
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Conflicts:
data/web/inc/init_db.inc.php
2018-01-27 17:22:08 +01:00
c9b3044d5d
[Postfix] Allow internal IPv6 networks
2018-01-24 08:37:27 +01:00
e86565e283
Expose Postfix's recipient_canonical_maps through web UI
2018-01-23 20:02:31 +01:00
c8f41cdae2
[Postfix] Listener for quarantaine, remove excluded Docker gw from mynetworks
2017-12-09 09:07:06 +01:00
3ec3a341e4
[Postfix] Remove gw from mynetworks in case of ipv6 failures
2017-11-21 09:33:43 +01:00
ade4b9e7ae
[Postfix, Web] Feature: BCC maps
2017-11-19 15:13:43 +01:00
073c6c6e73
[Postfix/Rspamd] Do not reject unauthenticated sender mismatches but rewrite their subject and assign symbol SPOOFED_SENDER with score 1.0
2017-10-04 23:16:39 +02:00
719aa1a391
[Postfix] Fix protocols
2017-09-18 10:59:45 +02:00
67056dc3d1
[Postfix] Less strict smtpd_tls_mandatory_protocols
2017-09-18 08:24:24 +02:00
089e8776f5
[Postfix] Stricter TLS settings for mandatory connections
2017-09-14 13:34:23 +02:00
83d485dd94
[Web, Postfix, Compose] Allow to add relayhosts per domain (+ plain and login authentication)
2017-07-22 20:39:54 +02:00
036c51f053
Prefere ipv4 to fix problems on v4-only envs
2017-06-19 10:39:14 +02:00
c9318ecf83
Switch to Rspamds milter interface
2017-06-06 21:59:44 +02:00
9965ff10a7
Fix mynetworks: Add mailcow ipv6 network
2017-05-17 22:38:59 +02:00
a75d916b74
Forwarding hosts in postscreen
2017-04-17 15:51:50 +02:00
d0d87ead49
Zeyple is not enabled by default
2017-04-10 13:16:40 +02:00
34bc242554
Add Zeyple filter
2017-04-05 22:19:01 +02:00
41d771e780
Aliases do not match alias domains
2017-03-01 17:59:46 +01:00
0630c882ee
When TLS is enforced for incoming mails, allow mynetworks and sasl authenticated users
2017-01-25 19:04:31 +01:00
54de192334
Add mydestination to prevent hostname == domain situations
2017-01-23 08:23:59 +01:00
86a8dc195e
Change ciphers
2017-01-09 20:22:44 +01:00
b6c95e2bd6
Add local networks
2016-12-22 12:20:17 +01:00
036d547415
Fix forwarding in sieve
2016-12-21 09:50:54 +01:00
a47625a34a
Remove unused table, rename table
2016-12-18 22:24:22 +01:00
5e883b6f51
Some last changes
2016-12-12 21:53:58 +01:00
bbd17a7e91
Remove vars from main.cf
2016-12-12 09:25:37 +01:00
47a5166383
Add pdns resolver, changed some other files
2016-12-11 18:58:29 +01:00
5f04dc0b04
mailcow dockerized
2016-12-09 20:39:02 +01:00
dofl
dofl
andryyy
Patrik Kernstock
André
elcore
Michael Kuron
Michael Kuron