[Mailman-Users] Unable to send emails with mailman/postfix
Scott Jones
sjones at scisat.ca
Mon Mar 6 16:01:30 EST 2017
Hi Mark,
Everything looks good from the netstat command.
I did get a connection refused with telnet. However, I then installed
postfix on the host server and port 25 now seems to be open, yet no go so
far on the messages.
Just as a recap, I'm currently running mailman on a Ubuntu VM hosted on a
Ubuntu server. Perhaps then I need to forward port 25 to the VM somehow? I
did have this working fine from hard disks, but with some server troubles
we wanted to keep mailman more self-contained.
Scott
On Mon, Mar 6, 2017 at 2:55 PM, Mark Sapiro <mark at msapiro.net> wrote:
> On 03/06/2017 11:39 AM, Scott Jones wrote:
> >
> > I have followed the integration methods you've pointed me towards. The
> > only thing I found was that I did not have a 'mailman' user installed
> > along with my mailman installation for changing the ownership of the
> > 'aliases' files.
> >
> > I've just received another DSN. The contents are:
> >
> >
> >
> > The response from the remote server was:
> >
> > The recipient server did not accept our requests to connect. Learn more
> > at https://support.google.com/mail/answer/7720
> > <https://support.google.com/mail/answer/7720> [[server FQDN] [IP]: timed
> > out]
> >
> >
> > Final-Recipient: rfc822; [mail list address]
> > Action: failed
> > Status: 4.4.1
> > Diagnostic-Code: smtp; The recipient server did not accept our requests
> > to connect. Learn more at https://support.google.com/mail/answer/7720
> > <https://support.google.com/mail/answer/7720>
> > [[server FQDN] [IP]: timed out]
> > Last-Attempt-Date: Mon, 06 Mar 2017 11:31:34 -0800 (PST)
>
> Assuming Postfix is running and listening
>
> sudo netstat -ltnp|grep master
>
> should show things like
>
> tcp 0 0 0.0.0.0:25 0.0.0.0:*
> LISTEN 2781/master
>
> and maybe
>
> tcp6 0 0 :::25 :::*
> LISTEN 2781/master
>
>
> If that's the case, this appears to be a firewall issue. You are not
> able to access port 25 on the server from outside. What do you get if
> from outside the server you do
>
> telnet [server FQDN] 25
>
> If you get an immediate connection refused, either Postfix isn't
> listening or the firewall is rejecting port 25 connects. More likely,
> and consistent with your DSN, you get a timeout which means the firewall
> is dropping packets to port 25.
>
> (Please reply-all to keep this on the list.)
>
> --
> Mark Sapiro <mark at msapiro.net> The highway is for gamblers,
> San Francisco Bay Area, California better use your sense - B. Dylan
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