On 9/18/2013 10:40 AM, Matthias Wimmer wrote: > El 2013-09-18 10:10:33, Bowie Bailey escribió: >> The first server generates this (from the queue): >> >> 7.3K 0000000000218330.52396538.000004C4 Sep 18 04:32 >> mailuser #@[] >> [email protected] >> >> (note the return address of "#@[]") >> >> And then I see messages like this when it is sent to the second server: >> >> Sep 18 10:05:22 server2 courieresmtpd: >> error,relay=::ffff:xxx.xxx.xxx.xxx,from=<#@[]>: 517 Syntax error. >> >> What is going on here? > The mail in the queue is a double bounce. (The mail that bounced is > already a bounce mail.) Courier uses the pseudo sender address of #@[] > for such mails. > > You cannot forward such mails to another server. In short, you cannot > forward the main postmaster account of a courier mail server to an account > on another mail server.
But there are no local mailboxes on this server. Everything is forwarded to another server for delivery. What do you do with the postmaster account on a server with no local mailboxes? Normally this is not an issue. This time, there was a DNS problem overnight which caused a bunch of these double bounce messages to pile up. And I think the delivery attempts were causing the second server to tarpit the first one slowing everything down to a crawl -- not what you want with over 3000 messages in the queue. -- Bowie ------------------------------------------------------------------------------ LIMITED TIME SALE - Full Year of Microsoft Training For Just $49.99! 1,500+ hours of tutorials including VisualStudio 2012, Windows 8, SharePoint 2013, SQL 2012, MVC 4, more. BEST VALUE: New Multi-Library Power Pack includes Mobile, Cloud, Java, and UX Design. Lowest price ever! Ends 9/20/13. http://pubads.g.doubleclick.net/gampad/clk?id=58041151&iu=/4140/ostg.clktrk _______________________________________________ courier-users mailing list [email protected] Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
