Hi all, some time ago (message <87k5bqv5bc.fsf@thinkpad.tsdh.de> on ding) I had problems when sending mails with big attachments (> 1 MiB or so). To be precise, the sending via SMTP works just fine, but I get the error from the subject when Gnus tries to upload the message to my local IMAP server because of the Gcc header. In the thread starting with <87k5bqv5bc.fsf@thinkpad.tsdh.de> I said that turning off imap logging (nnimap-debug, imap-log, imap-debug all set to nil) solves the issue for me, but sadly that's not true. I still get that error and for me its perfectly reproducible. Here's an example backtrace. --8<---------------cut here---------------start------------->8--- Debugger entered--Lisp error: (file-error "writing to process" "bad address" #) process-send-region(# 1 8337045) imap-send-command(("APPEND \"" "INBOX" "\" " #) nil) imap-send-command-wait(("APPEND \"" "INBOX" "\" " #)) imap-message-append("INBOX" # nil nil " *nnimap* Uni") nnimap-request-accept-article("INBOX" "Uni" t) gnus-request-accept-article("nnimap+Uni:INBOX" "nnimap:Uni" t t) gnus-inews-do-gcc() gnus-agent-possibly-do-gcc() run-hooks(message-sent-hook) message-send(nil) message-send-and-exit(nil) call-interactively(message-send-and-exit nil nil) --8<---------------cut here---------------end--------------->8--- The local IMAP server hosting the Gcc-ed group is Dovecot v1.1.11. I'm not sure if part of the problem is on its side, but at least I can say that it has no problems when offlineimap synces big messages from my IMAP accounts to the local dovecot. When the Gcc-upload fails, dovecot logs a line like this: dovecot: Feb 09 17:14:51 Info: IMAP(uni): \ Disconnected in APPEND bytes=1992955/1144675 Could somebody please help me with this? Bye, Tassilo Gnus v5.13 GNU Emacs 23.0.90.1 (x86_64-pc-linux-gnu, GTK+ Version 2.14.7) of 2009-02-08 on thinkpad 200 cache.uni-koblenz.de InterNetNews NNRP server INN 2.4.2 ready (posting ok).