On 17 Mar 2008, at 08:51, Olivier wrote: > Unfortunately, destination mailboxes are managed by an ISP which > require > SMTP and POP clients to somehow authenticate.
Thats a good thing. > As my knowledge of exim4 and email programs is very limited, I'm > wondering > if there's a way for exim4 to provide these authentication data. Exim can authenticate as an SMTP client. Information on this can be found at http://www.exim.org/exim-html-current/doc/html/spec_html/ch33.html#SECID170 > I wrote "somehow authenticate" as it's not very clear in my mind : > - when we send emails during normal work hours, everything works fine > - but when we send emails during off-hours (Week-Ends, nightime), > relaying > is denied ("Relaying denied" error message) and our ISP says we need > to > authenticate just like Outlook clients do. I suggest you check how your Outlook clients are configured, but I suspect that they are using POP-before-SMTP authentication - meaning that the SMTP server accepts SMTP messages sent from an IP address that has authenticated to the POP server within the last x minutes. It would be better to use proper SMTP authentication, and you need to see if your ISP can provide that. Nigel. -- [ Nigel Metheringham [EMAIL PROTECTED] ] [ - Comments in this message are my own and not ITO opinion/policy - ] -- ## List details at http://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
