January 2023 - dovecot

CRAM MD5 passwd db permission issue
by Gerben Wierda 04 Jan '23

04 Jan '23

I am busy migrating. I am moving from macOS+MacPorts to Ubuntu+Docker On the old system, I have this in the dovecot config: mail_uid = _dovecot mail_gid = mail mail_privileged_group = mail mail_access_groups = mail This seems weird to me, I think the dovecot user should be in group dovecot only if I understand the docs. On the old system dovecot, postfix, dovenull and rspamd are all members of the mail group. On that system, the cram md5 passwd database (file) has these permissions: drwxr-xr-x 3 root wheel 96 Feb 2 2021 . drwxr-xr-x 22 root admin 704 Jan 4 15:17 .. -rw-r----- 1 root mail 1234 Feb 2 2021 cram-md5.pwd and that has worked like that for many years, basically starting with Mac OS X Server, surviving all kinds of macOS migrations. On my new Ubuntu system I've copied this setup over: drwxr-xr-x 2 root root 4096 Jan 4 09:49 . drwxr-xr-x 7 root root 4096 Jan 4 15:21 .. -rw-r----- 1 root mail 1234 Feb 2 2021 cram-md5.pwd mail_uid = dovecot mail_gid = mail mail_privileged_group = mail mail_access_groups = mail But: Jan 04 15:40:08 auth: Error: passwd-file /etc/dovecot/etc/cram-md5.pwd:open(/etc/dovecot/etc/cram-md5.pwd) failed: Permission denied (euid=91(dovecot) egid=91(dovecot) missing +r perm: /etc/dovecot/etc/cram-md5.pwd, we're not in group 8(mail), dir owned by 0:0 mode=0755) And really, dovecot is in group mail. From /etc/group: mail:x:8:postfix,dovecot dovenull:x:90: dovecot:x:91: And from /etc/passwd: dovenull:x:90:90::/home/dovenull:/usr/sbin/nologin dovecot:x:91:91::/home/dovecot:/usr/sbin/nologin So, that I get this error baffles me. Gerben Wierda (LinkedIn <https://www.linkedin.com/in/gerbenwierda>) R&A IT Strategy <https://ea.rna.nl/> (main site) Book: Chess and the Art of Enterprise Architecture <https://ea.rna.nl/the-book/> Book: Mastering ArchiMate <https://ea.rna.nl/the-book-edition-iii/>

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doveadm proxy list has strange entries
by Tobias Florek 02 Jan '23

02 Jan '23

Hi! I am using dovecot from the latest docker image: Version 2:2.3.20-3+debian11 When getting the proxy list I get the following entries. # doveadm -f flow proxy list username=user(a)example.com proto=imap src ip=10.254.0.13 dest ip=172.23.6.194 port=143 username=username proto=service src ip=src-ip dest ip=dest-ip port=dest-port username=user2(a)example.com proto=imap src ip=10.254.0.13 dest ip=172.23.6.194 port=143 username=username proto=service src ip=src-ip dest ip=dest-ip port=dest-port username=user3(a)example.com proto=imap src ip=10.254.0.13 dest ip=172.23.6.194 port=143 username=username proto=service src ip=src-ip dest ip=dest-ip port=dest-port ... These correspond to the http API's response: # curl -H "Authorization: X-Dovecot-API $(echo -n MY_API_KEY|base64 -w0)" http://localhost:8080/doveadm/v1 -H "Content-Type: application/json" -d '[["proxyList",{},"tag1"]]' | jq [ [ "doveadmResponse", [ { "username": "user(a)example.com", "service": "imap", "src-ip": "10.254.0.13", "dest-ip": "172.23.6.194", "dest-port": "143" }, { "username": "username", "service": "service", "src-ip": "src-ip", "dest-ip": "dest-ip", "dest-port": "dest-port" }, ... ], "tag1" ] ] This does not look right. Cheers, Tobias Florek

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Error: Failed to get quota resource STORAGE: quota-fs: quotactl(Q_GETQUOTA, NFS:/home) failed: No such file or directory
by Jorge Concha C. 01 Jan '23

01 Jan '23

Hello everyone, I'm migrating my dovecot (imap) server from CentOS-6 to RockyLinux-9, but I can't get the QUOTA-FS plugin to work. When trying the "doveadm quota get -u user" command, it returns an error "doveadm(user): Error: Failed to get quota resource STORAGE: quota-fs: quotactl(Q_GETQUOTA, nfs:/home) failed: No such file or directory" If the user has his "$home" on a local drive, everything works fine, but if the user has his $home on a nfs-filesystem, it throws that error. On CentOS-6, everything works fine, with the same users on the same nfs-filesystem. I don't know if it is the product of the OS change or the dovecot version change. CentOS6 -> Dovecot 2.2.10 RockyLinux-9 -> Dovecot 2.3.16 Does anyone have any ideas? Thanks -- Jorge Concha C. Área de Sistemas - CEC U. de Chile

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