October 2022 - dovecot

Re: LDAP just for passdb
by Francis Augusto Medeiros-Logeay 14 Oct '22

14 Oct '22

Again, a bit more reading got me to adding this to my passdb config: username_filter = *(a)domain-a.com This way, I can control which domains get to authenticate via my ldap backend, which gives me time to design a good way of saving other attributes there. If anyone have other ways of doing this, ie., having multiple domains on ldap/freeipa and getting an elegant integration with Dovecot, I’d be glad to hear. Best, Francis > On 14 Oct 2022, at 21:58, dovecot-request(a)dovecot.org wrote: > > I actually saw that it was possible, and it works, but I came across another problem and I wonder if you have any tips about it: > > On my current dovecot setup, I use SQL as the backend. So I have the following users: > > francis(a)domain-a.com <mailto:francis@domain-a.com> <mailto:francis@domaina.com> > francis(a)domain-b.com <mailto:francis@domain-b.com> <mailto:francis@domain-b.com> > > Those are separate users which their own mailboxes. > > However, I have a freeipa that is configured for the `domain-a.com <http://domain-a.com/> <http://domain-a.com/>` realm. However, since I am using `%n` for the uid search: > > auth_bind_userdn = uid=%n,cn=users,cn=accounts,dc=domain-a,dc=com > And > pass_filter = (&(objectClass=posixAccount)(uid=%n)) > > It of course leads up to both users above being able to authenticate with the same password. > > Is there a way to limit ldap authentication to just one domain, or perform a search where both username and domain are checked? I could use the `mail``attribute to filter users, but I imagine that if two users have the same mail configured, I?d run into trouble?. > > Best, > > Francis > >> On 14 Oct 2022, at 20:08, dovecot-request(a)dovecot.org <mailto:dovecot-request@dovecot.org> wrote: >> >> Hi, >> >> I couldn't find it in the documentation, so I was wondering - is it >> possible to configure Dovecot to use LDAP for passdb and keep using SQL >> for userdb? >> >> I would like to do that before I come up with a good strategy to expand >> my ldap schema to support other mail attributes for virtual domains, >> aliases, etc. >> >> I am currently using FreeIPA. >> >> Best, >> >> Francis >

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Re: LDAP just for passdb
by Francis Augusto Medeiros-Logeay 14 Oct '22

14 Oct '22

I actually saw that it was possible, and it works, but I came across another problem and I wonder if you have any tips about it: On my current dovecot setup, I use SQL as the backend. So I have the following users: francis(a)domain-a.com <mailto:francis@domaina.com> francis(a)domain-b.com <mailto:francis@domain-b.com> Those are separate users which their own mailboxes. However, I have a freeipa that is configured for the `domain-a.com <http://domain-a.com/>` realm. However, since I am using `%n` for the uid search: auth_bind_userdn = uid=%n,cn=users,cn=accounts,dc=domain-a,dc=com And pass_filter = (&(objectClass=posixAccount)(uid=%n)) It of course leads up to both users above being able to authenticate with the same password. Is there a way to limit ldap authentication to just one domain, or perform a search where both username and domain are checked? I could use the `mail``attribute to filter users, but I imagine that if two users have the same mail configured, I’d run into trouble…. Best, Francis > On 14 Oct 2022, at 20:08, dovecot-request(a)dovecot.org wrote: > > Hi, > > I couldn't find it in the documentation, so I was wondering - is it > possible to configure Dovecot to use LDAP for passdb and keep using SQL > for userdb? > > I would like to do that before I come up with a good strategy to expand > my ldap schema to support other mail attributes for virtual domains, > aliases, etc. > > I am currently using FreeIPA. > > Best, > > Francis

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LDAP just for passdb
by Francis Augusto Medeiros-Logeay 14 Oct '22

14 Oct '22

Hi, I couldn't find it in the documentation, so I was wondering - is it possible to configure Dovecot to use LDAP for passdb and keep using SQL for userdb? I would like to do that before I come up with a good strategy to expand my ldap schema to support other mail attributes for virtual domains, aliases, etc. I am currently using FreeIPA. Best, Francis

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"make check" fail at test_program_refused
by A. Schulze 14 Oct '22

14 Oct '22

Hello, I moved my buildsystem to an other platform (I do not fully control) and now receive this error on "make check" Error: program tcp:127.0.0.2:42027: connect(::1) failed: Connection refused test_program_refused ................................................. : FAILED The build run on jenkins buildnodex spawn up on a kubernetes cluster. What I noticed so far: the buildnode opereate ipv4 only but has an entry in /etc/hosts: 127.0.0.1 c4a84c76f0d6 ::1 c4a84c76f0d6 Maybe that's the glitch ... I tried dovecot-2.3.15 and 2.3.19.1. Both fail (only the portnumber differ) Is there an option to disable only one specific test? I dislike to skip "make check" at all. Andreas

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what are the options to 'interact' with a dovecot imap user
by Marc 14 Oct '22

14 Oct '22

I am looking for a user friendly way to have a user to tell the 'server' to either store or remove an email address. a. My first thought was to use imapsieve for this and have an imap sieve plugin store/remove the email address of the message that is being dragged into a predefined monitored folder. This would work with any imap client b. I was thinking about the message Flagged[1]. I am curious how would I be able to detect this (in sieve)? This does not seem to be stored in the source of the message. Although every client seems to support it, it would probably conflict with every day use cases. c. Then you have these colours and/or categories. But these do not seem to propagate across clients. Where are these even stored? Any ideas on how this can be done? [1] https://www.rfc-editor.org/rfc/rfc3501#section-2.3.2

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Director hashing
by Dan Conway 14 Oct '22

14 Oct '22

Hello all, I have a 2 node director setup that uses checkpassword for authentication as well as backend assignment through director tags. director_servers = 192.168.1.10 192.168.1.20 director_mail_servers = 192.168.2.10@srv1 192.168.2.11@srv2 checkpassword writes the following to Dovecot on successful authentication: proxy=y\tdirector_tag=<tag>\tport=<port>ssl=yes\tdestuser=<email>\t This seems to work just fine. However, when I attempt to view a users current hash/initial config: # doveadm director status "user(a)domain.com" Current: n/a (expires -1) Hashed: Initial config: I get null data. There does appear to be a hash mapping of some sort however: # doveadm director map -u user(a)domain.com 1140334690 # doveadm director map -h 1140334690 user(a)domain.com The use of doveadm director move has no effect. doveadm reports it moved the user, but it does not: # doveadm -v director move "user(a)domain.com" 192.168.2.11 Info: User hash 1140334690 moved to 192.168.2.11 When using checkpassword and supplying fields to Dovecot, should I also be including another field to populate hashes for director? I could be missing something obvious in the docs. I'm on version 2.3.18 (9dd8408c18). I have not included dovecot.conf due to the size. If someone needs to see it I can supply it.

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Thunderbird can't connect to Dovecot (bad certificate: SSL alert number 42) - sni
by Paul Kudla (SCOM.CA Internet Services Inc.) 12 Oct '22

12 Oct '22

Good morning to all i guess things have changed yet again to keep this simple : i buy a certificate (example) : mail.paulkudla.net i generated the key / csr as per normal using data = '/usr/local/bin/openssl req -new -key /tmp/temp.key -out /tmp/temp.csr -subj "/C=%s/ST=%s/L=%s/O=%s/CN=%s"' %(country,state,location,organization,self.domain) please note the above is done in django (yes i am running thunderbird v102) i go buy the certificate i database the CRT & CA CSR is : -----BEGIN CERTIFICATE REQUEST----- MIICpzCCAY8CAQAwYjELMAkGA1UEBhMCQ0ExEDAOBgNVBAgMB09udGFyaW8xDzAN BgNVBAcMBldoaXRieTETMBEGA1UECgwKUGF1bCBLdWRsYTEbMBkGA1UEAwwSbWFp bC5wYXVsa3VkbGEubmV0MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA mSWAdwbxwjkjALQa4UdgOBHcFJDA5XkGI/8SswotYMnzjRAAE4S88vUTO3ltMasY rprEvWEiEzUrRon3hh1ZZguV775fNCbyKUGKwGLKPDpmKxYCsE4gi2z7LKY13wSv lLE8++Hqvt3cmZZ+wxWP/hy6LcS/6PvUPgN7S+cEC5TNLQ6VRZdpSGolRCrN9hsN 15GWYEQ/zcLW2PeCWav9DOr6NHBRE+fruDy3jFT0TkHWf3H+GKB0/RZ0agMJcEGc 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00u/I5sUKUErmgQfky3xxzlIPK1aEn8= -----END CERTIFICATE----- -----BEGIN CERTIFICATE----- MIIFgTCCBGmgAwIBAgIQOXJEOvkit1HX02wQ3TE1lTANBgkqhkiG9w0BAQwFADB7 MQswCQYDVQQGEwJHQjEbMBkGA1UECAwSR3JlYXRlciBNYW5jaGVzdGVyMRAwDgYD VQQHDAdTYWxmb3JkMRowGAYDVQQKDBFDb21vZG8gQ0EgTGltaXRlZDEhMB8GA1UE AwwYQUFBIENlcnRpZmljYXRlIFNlcnZpY2VzMB4XDTE5MDMxMjAwMDAwMFoXDTI4 MTIzMTIzNTk1OVowgYgxCzAJBgNVBAYTAlVTMRMwEQYDVQQIEwpOZXcgSmVyc2V5 MRQwEgYDVQQHEwtKZXJzZXkgQ2l0eTEeMBwGA1UEChMVVGhlIFVTRVJUUlVTVCBO ZXR3b3JrMS4wLAYDVQQDEyVVU0VSVHJ1c3QgUlNBIENlcnRpZmljYXRpb24gQXV0 aG9yaXR5MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAgBJlFzYOw9sI s9CsVw127c0n00ytUINh4qogTQktZAnczomfzD2p7PbPwdzx07HWezcoEStH2jnG vDoZtF+mvX2do2NCtnbyqTsrkfjib9DsFiCQCT7i6HTJGLSR1GJk23+jBvGIGGqQ Ijy8/hPwhxR79uQfjtTkUcYRZ0YIUcuGFFQ/vDP+fmyc/xadGL1RjjWmp2bIcmfb IWax1Jt4A8BQOujM8Ny8nkz+rwWWNR9XWrf/zvk9tyy29lTdyOcSOk2uTIq3XJq0 tyA9yn8iNK5+O2hmAUTnAU5GU5szYPeUvlM3kHND8zLDU+/bqv50TmnHa4xgk97E xwzf4TKuzJM7UXiVZ4vuPVb+DNBpDxsP8yUmazNt925H+nND5X4OpWaxKXwyhGNV 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vGp4z7h/jnZymQyd/teRCBaho1+V -----END CERTIFICATE----- sni.conf : local_name mail.paulkudla.net { ssl_key = /programs/common/getssl.cert -c mail.paulkudla.net -q yes ssl_cert = /programs/common/getssl.cert -c mail.paulkudla.net -q yes ssl_ca = /programs/common/getssl.cert -c mail.paulkudla.net -q yes } please note getssl.cert above is a program that returns the keys from the database - worked perfectly fine before. basically what do i have to add to what file (csr, cert, ca) to get the sni to work again for mail.paulkudla.net so based on the mail lists So in you example a valid .csr now contains: CN = example.com SAN.1 = example.com SAN.2 = www.example.com etc. Of course you could also have: CN = www.example.com SAN.1 = www.example.com SAN.2 = example.com what do i modify (and how) ???? the above says to modify the csr ? please keep in mind that the cert purchased is only for the name : mail.paulkudla.net thus i fail to see why it is throwing error 42, however this seems to be a patch to thunderbird as well i did not have to change the servers base ssl stuff (*.scom.ca) so that is still working or will that need to be updated as well eventually postfix is perfectly fine ????? Note from sni.conf (ssl config file) - aka *.scom.ca is ok ?? : ssl = yes verbose_ssl = yes ssl_dh =</usr/local/etc/dovecot/dh-4096.pem ssl_prefer_server_ciphers = yes #ssl_min_protocol = TLSv1.2 #Default *.scom.ca ssl_key =</usr/local/etc/dovecot/scom.pem ssl_cert =</usr/local/etc/dovecot/scom.pem ssl_ca =</usr/local/etc/dovecot/scom.pem -- Happy Tuesday !!! Thanks - paul Paul Kudla Scom.ca Internet Services <http://www.scom.ca> 004-1009 Byron Street South Whitby, Ontario - Canada L1N 4S3 Toronto 416.642.7266 Main 1.866.411.7266 Fax 1.888.892.7266 Email paul(a)scom.ca

3 6

One-off backup
by Ian Evans 11 Oct '22

11 Oct '22

I run a small email server for me and the missus. Six dovecot users. Our host is migrating our server instance. They usually (99.9999% lol) go off without a hitch. As we don't have dovecot running elsewhere, I'm assuming doveadm is the wrong tool. If we want to make a one-off backup prior to the migration, is shutting down postfix and running tar czf mailstorage.tgz /path/to/mail okay? Thanks.

8 9

grabbing multiple patterns from allof
by Marc 11 Oct '22

11 Oct '22

Anyone an idea how you should grab multiple matches from allof? if allof ( true, header :regex "Subject" "(test).*(test2)", envelope :matches "from" "*" )

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Static build problems
by Jacob Welsh 09 Oct '22

09 Oct '22

I'm attempting to build the latest Dovecot, version 2.3.19.1, on Gales Linux, a distribution based on musl libc with all static linking. After working around some expected troubles to generate configure, such as the libtool and iconv.m4 dependencies, the build appeared to complete successfully. But on closer inspection, the plugins were installed as a bunch of .a and .la files rather than getting linked into any of the binaries, as would be necessary to actually use them. I determined that the probe for dynamic module support (DOVECOT_MODULES defined in 'm4/modules.m4') had returned a false positive: in the static configuration musl includes a stub dlopen() that always returns failure at runtime, so a compile-and-link-only test is not predictive. Libtool itself is affected in the same way, but it comes with the --disable-shared option which usually makes things works fine. Short of a proper solution (perhaps removing modules.m4 and going instead by what libtool already determined, since you've decided to depend on it anyway), I stubbed out modules.m4 to simply return the correct result for this platform, thus: AC_DEFUN([DOVECOT_MODULES], [ have_modules=no AC_SUBST(MODULE_LIBS) AC_SUBST(DLLIB) ]) Now the build is failing due to the absence of a function that's defined only when HAVE_MODULES is true: libtool: link: gcc -I../../src/lib -I../../src/lib-test -I../../src/lib-ssl-iostream -DDCRYPT_MODULE_DIR=\"/gales/pkg/dovecot-0.0-2.3.19.1/lib/dovecot\" -DDCRYPT_SRC_DIR=\"../../src/lib-dcrypt\" -std=gnu99 -g -O1 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast -fno-builtin-strftime -Wstrict-aliasing=2 -Wl,--whole-archive -Wl,../lib-ssl-iostream/.libs/libssl_iostream.a -Wl,--no-whole-archive -o test-stream test_stream-dcrypt.o test_stream-istream-decrypt.o test_stream-ostream-encrypt.o test_stream-test-stream.o ../lib-ssl-iostream/.libs/libssl_iostream.a ../lib-test/.libs/libtest.a ../lib/.libs/liblib.a test_crypto-dcrypt.o: In function `dcrypt_initialize': /home/user/gales-linux/gports/dovecot/build/dovecot-2.3.19.1/src/lib-dcrypt/dcrypt.c:34: undefined reference to `module_dir_try_load_missing' collect2: error: ld returned 1 exit status make[3]: *** [Makefile:664: test-crypto] Error 1 I noticed commit d21897832a443d139d56b1fb1c86d8f76e5f77f3 from 2009, "Fixed compiling without module support", and clearly it's supposed to work since the #ifdefs are there, but I begin to suspect that nobody's actually tested this branch of the configuration tree recently. Further, looking through the automakefiles I'm not finding how the plugin libraries are supposed to work at all in this case and I begin to fear that they simply... aren't. Say it ain't so? Jacob

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