Hanno Böck wrote: > Now, 4xx error codes are for temporary errors. I found this piece of code in > courier: > courier/submit.C- std::cout << (max_bofh_ishard > courier/submit.C: ? "531 Too many recipients." > courier/submit.C: : "431 Too many recipients.") > courier/submit.C- << std::endl << std::flush; > > Now, I don't understand that. It seems one can set "hard" and "soft" limits > for maxrcpts (although I don't find anything documented about it). What > should > that mean? What's a soft limit for maxrcpts? > > A 4xx error should mean for the user that just sending the same mail later > again will work (RFC 2821), so from what I can see, it should always be 531. > If I'm wrong, please explain me why.
I think a 4xx temporary failure is more polite: the sending relay will keep the relevant recipients for a future attempt, and may eventually succeed to send the message to all of them. By contrast, a 5xx failure is likely to be interpreted as non-existing or undeliverable address, and the message will be bounced back to the sender for the relevant addresses. In this case, senders have to do by hand the operations that their relay can do automatically. ------------------------------------------------------------------------------ Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf _______________________________________________ courier-users mailing list [email protected] Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
