dovecot-2.2.18 / net_listen_unix(...) failed: Value too large for defined data type

[Aki Tuomi]

> On September 25, 2016 at 4:54 PM Christophe Bricout <christophebricout at yahoo.fr> wrote:
> 
> 
> Dear All,
> 
> SUMMARY: 
> Dovecot shows an issue when "localstatedir" path is too long
> The issue exists also with dovecot-2.2.25
> 
> CONFIGURATION:
> The configure options are:
> 
> ./configure --prefix=${TARGET_DIR} \
> --sysconfdir=${TARGET_DIR}/cfg \
> --localstatedir=${TARGET_DIR}/var \
> --with-ssl=openssl \
> --with-sqlite \
> --disable-shared
> 
> RESULTS:
> When executing dovecot (as root), the followin message appears:
> 
> Error: service(dict): net_listen_unix(/<user>/localbin/minnowboard-turbot-applications/1.0/linux/x86_64-linux/localbin/dovecot/2.2.18/linux/x86_64-linux/var/run/dovecot/dict) failed: Value too large for defined data type
> Error: service(config): net_listen_unix(<user>/localbin/minnowboard-turbot-applications/1.0/linux/x86_64-linux/localbin/dovecot/2.2.18/linux/x86_64-linux/var/run/dovecot/config) failed: Value too large for defined data type
> ---
> 
> WORKAROUND:
> The problem is solved by defining shorten localstatedir or using base_dir = /var/run/dovecot.
> 
> It seems the path lengh causing a such issue. Path Lengh > 127
> 
> Available for additional experiments
> Best Regards

Hi! 

Unix socket maximum path len is 108 characters. This is *nix limitation, not dovecot.

---
Aki Tuomi
Dovecot oy