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On Saturday 19 November 2011 08:51:16 you wrote:
> On Fri, Nov 18, 2011 at 3:37 PM, Anne Wilson <email@example.com>
> > My home LAN has a strange problem. We use postfix on my IMAP server to
> > separate local mail from external mail. The transport hash is based on:
> > lydgate.net local:
> > .lydgate.net local:
> > lydgate.lan local:
> > .lydgate.lan local:
> > * smtp:[mailhost.zen.co.uk]
> > .* smtp:[mailhost.zen.co.uk]
> > I also host a small mailing list on Zen's servers, using the email
> > address firstname.lastname@example.org.
> > I receive the mail for the list, and also the owner messages, but I
> > cannot write to the list, except by using webmail. The problem appears
> > to be that postfix thinks it is LAN traffic, and can't find a user
> > called creativestitching.
> > I assume that I have somehow triggered a catch-all, due to a mis-
> > understanding, so can someone please explain
> > a) Why is creativestitching mail thought to be local?
> > b) How can I correct it?
> > c) Is there documentation that would explain this in more detail?
> We don't know your network topology; are "home LAN" and "my IMAP
> server" on the same network?
Sorry - obvious to me, but not to you :-) Yes, they are on the same network.
Other background information that may be relevant is that originally the LAN
was called lydgate.net. This is a second domain that I have owned for some
time, but not originally when I set up the LAN. At that time I didn't know
that .net was a possible tld. When I changed from CentOS 5 to CentOS 6, being
a clean install, I decided that I ought to change the name to lydgate.lan. I
did have some problems at first, and tweaked main.cf to get things working
again. I assume that I have introduced a problem that wasn't obvious until I
needed to post to creativestitching.
> Someone will likely spot something if you provide, minimally, the
> output of postconf -n and relevant log output.
It's so long since I had problems with postfix that I had forgotten that.
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
home_mailbox = Maildir/
html_directory = no
inet_interfaces = localhost
inet_protocols = all
mail_owner = postfix
mail_spool_directory = /var/spool/mail
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
masquerade_domains = $mydomain
mydestination = $myhostname, localhost.$mydomain, $mydomain, lydgate.lan
mydomain = lydgate.net
myhostname = tosh.lydgate.net
mynetworks = 192.168.0.0/28, 127.0.0.0/8
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases.postfix
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.7.3/README_FILES
relayhost = [192.168.0.40]
sample_directory = /usr/share/doc/postfix-2.7.3/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
unknown_local_recipient_reject_code = 550