Re: Mail with single \r, partial fetch, error "Broken virtual size in mailbox"

On 7. Jan 2025, at 17.07, Ewald Dieterich via dovecot <dovecot@dovecot.org> wrote:

I run Dovecot 2.3.21 with the mdbox mailbox format.

Likely happens with all mailbox formats, at least also with sdbox.

If I do a certain partial fetch on a mail with a single carriage return \r Dovecot closes the connection and logs the following error:

Error: Mailbox INBOX: Deleting corrupted cache record uid=1: UID 1: Broken virtual size in mailbox INBOX: read(/var/spool/dovecot/user/storage/m.1): FETCH BODY[]<18.100> got too little data: 5 vs 6

Thanks, I can reproduce. I'll look into fixing it later. Tracking in DOP-3706.