Dovecot error [IMAP] Cannot open folder “/dovecot/sieve”. (NO [SERVERBUG] Internal error occurred

[David_Sleath]

Can anyone suggest how I stop getting this msg when send/receive emails?
[IMAP] Cannot open folder “/dovecot/sieve”. (NO [SERVERBUG] Internal error occurred. Refer to server log for more information. [2026-02-22 12:40:24] (0.001 + 0.000 secs).)

[cyberzork]

@David_Sleath

[IMAP] Cannot open folder “/dovecot/sieve”. (NO [SERVERBUG] Internal error occurred

See the following post reply below where another user in that thread had the same error.

Managesieve causes sync errors

I may have found a workaround - by default the managesieve script is stored as .dovecot.sieve Unfortunately, dovecot presents that as a mail folder - mail clients that are aware of managesieve ignore them but sadly eMc doesn’t By editing the /etc/dovecot/conf.d/90-sieve.conf you can change the default sieve filename (in my case, to dovecot.sieve), restart dovecot and eMc will, after an account delete/re-add sync again with no errors. So there is a workaround but it would be ni…

[David_Sleath]

Thanks for the reply

[crlazar]

Hello,

any plans to fix this issue? I was talking to my provider and they’re clearly not changing any global setting for one mail client. I like the product, but getting this ignored, or popping up it’s deterring me from making it default.

[NMHindman]

I found a solution. In “Settings/Accounts,” select the account you have the issue with. In that account select the IMAP tab. At the bottom of the IMAP tab see “Ignored paths / Do not create folders from the following paths:” There you can enter the parent dovecot folder, and thereafter it will be ignored.