Noel Jones: > Wietse Venema wrote: > > Something that will drastically cut the time per session: > > > > smtpd_timeout = ${stress?10s}${stress:300s} > > I would be concerned about sites that are chronically short of > smtpd processes with an inexperienced or inattentive admin. > Maybe 20s~30s rather than 10s. That's still 10x or more > better performance under stress, and 30s has been shown to be > safe for everyday use.
I see that observation as an argument for < 30s timeouts under stress :-) (The idea is to help properly configured sites primarily. Sites that are permanently overloaded will already be missing some email, due to TCP-level or SMTP-level timeouts.) > > smtpd_hard_error_limit = ${stress?2}${stress:20} > > Yes. Or stress?1. Whatever... Yes, 1 will do. We're doing this only under conditions where some mail is already not getting through. Wietse