FYI, found the solution. It seems doveadm can't cope with brackets in mailbox names.
I moved the user's mails into non-braketed, deleted the bracketed and doveadm backup worked fine after that. ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Sunday, 24 May 2020 14:32, Laura Smith <n5d9xq3ti233xiyif...@protonmail.ch> wrote: > Hi All, > > So close and yet so far. ;-( > Have been migrating users from an old Dovecot server to a new one. > All of the users have doveadm backup'd perfectly, except for one ! > > What does the below mean ? > > $ sudo doveadm -v -o imapc_user=j...@example.org.tld -o > imapc_password=secretSquirrel -o imapc_host=old-server.example.com backup -1 > -R -u j...@example.org.tld imapc: > dsync(j...@example.org.tld): Info: imapc(old-server.example.com:993): > Connected to 10.10.10.10:993 (local 10.10.10.11:35858) > dsync(j...@example.org.tld): Error: Failed to access mailbox Sent Messages > (jasmin@example: Mailbox doesn't exist: Sent Messages (jasmin@example (0.001 > + 0.000 secs). > dsync(j...@example.org.tld): Error: Failed to access mailbox Sent Messages > (jas...@example.org: Mailbox doesn't exist: Sent Messages (jas...@example.org > (0.001 + 0.000 secs). > dsync(j...@example.org.tld): Error: Failed to access mailbox Drafts > (jasmin@example: Mailbox doesn't exist: Drafts (jasmin@example (0.001 + 0.000 > secs). > dsync(j...@example.org.tld): Error: Failed to access mailbox Drafts > (jas...@example.org: Mailbox doesn't exist: Drafts (jas...@example.org (0.001 > + 0.000 secs). > dsync(j...@example.org.tld): Error: Failed to access mailbox Deleted Messages > (jasmin@example: Mailbox doesn't exist: Deleted Messages (jasmin@example > (0.001 + 0.000 secs). > dsync(j...@example.org.tld): Error: Failed to access mailbox Deleted Messages > (jas...@example.org: Mailbox doesn't exist: Deleted Messages > (jas...@example.org (0.001 + 0.000 secs).