Am 13.09.2011 14:34, schrieb Simon Loewenthal/NL/Tele2: > On 09/13/2011 02:11 PM, Wietse Venema wrote: >> Simon Loewenthal/NL/Tele2: >>> >>> Hi, >>> >>> I have a seen a few of these messages popping up in the mail.log >>> over the past weeks. Would someone tell me whether this is a >>> configuration problem with my server, or a remote site? The 451 error >>> has appeared from a couple of sites, hence I wonder if the problem lies >>> with my site. In the case of the example below, the message is delivered. >> SMTP is a client-server protocol. >> >> When sending mail, Postfix is the SMTP client. >> >> When receiving mail, Postfix is the SMTP server. >> >> When the SMTP server replies with "server configuration error" then >> the SMTP server has a problem. >> >> Wietse > Thank-you Wietse. > Thus, the problem is my broken server. Next step is to work out where > the problem is.
why is YOUR server broken if the REMOTE server says "configuration problem"?
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