[BlueOnyx:17423] Re: Relay email problem

[Tobias Gablunsky]

Hi Chris,

> -----Original Message-----
> From: blueonyx-bounces at mail.blueonyx.it [mailto:blueonyx-
> bounces at mail.blueonyx.it] On Behalf Of Chris Gebhardt - VIRTBIZ Internet
> Sent: Tuesday, April 14, 2015 3:51 PM
> To: blueonyx at mail.blueonyx.it
> Subject: [BlueOnyx:17422] Re: Relay email problem
> 
> Hi Tobias,
> 
> On 4/14/2015 6:45 AM, Tobias Gablunsky wrote:
> > Hello list,
> >
> > I have a problem relaying emails over a fully patched 5108R
> installation.
> >
> > I added a hostname into the field "Relay Email From Hosts/Domains/IP
> Addresses" under the global Email Servers Settings. It is a dynamic dns
> name which gets resolved correctly if I try it on the system in a shell.
> >
> > But when sending an email from this host I get the following in
> /var/log/maillog:
> >
> > Apr  9 14:51:15 mail sendmail[23945]: t39CpFjS023945:
> ruleset=check_rcpt, arg1=<redacted at hotmail.com>,
> relay=ip25050304.dynamic.kabel-deutschland.de [37.5.3.4], reject=550 5.7.1
> <redacted at hotmail.com>... Relaying denied. Proper authentication required.
> > Apr  9 14:51:15 mail sendmail[23945]: t39CpFjS023945: lost input channel
> from ip25050304.dynamic.kabel-deutschland.de [37.5.3.4] to MTA after rcpt
> > Apr  9 14:51:15 mail sendmail[23945]: t39CpFjS023945:
> from=<redacted at domain.com>, size=0, class=0, nrcpts=0, proto=SMTP,
> daemon=MTA, relay=ip25050304.dynamic.kabel-deutschland.de [37.5.3.4]
> >
> > The entered hostname correctly ends up in the /etc/mail/access file and
> the corresponding .db-file gets created.
> >
> > Does anybody know a solution to this?
> 
> I think I am not 100% clear on the situation you are describing.   Am I
> correct to say that you have a BlueOnyx server that is hosted on a
> dynamic IP address, but you have dynamic DNS that points your chosen
> hostname(s) to it?
> 
> I would never advocate running a production server, especially one used
> for email, on a dynamic IP address.  I think you may be in for more
> trouble than it's worth if that is the case.   If I am understanding
> your scenario correctly, then my recommendation would be to at least
> institute smarthosting on the outbound email so that it will clear
> through a static IP address.   Of course, you'll need a server on a
> static IP address that you can use without authentication to get that
> done.

sorry for being unclear. But your second guess is correct, it is scenario 2:

> 
> Or perhaps I am misunderstanding the scenario, in which case I apologize
> for not being clear on the concept.
> 
> If it's simply a matter of using an email client that resides on a
> dynamic IP to relay through your server which is properly on a static IP
> address, then it may simply be a matter of enabling SMTP authentication
> on your email client.

The client uses a software which is not able to authenticate via user/pw. But this should be no big deal - at least regarding to the gui: there you are allowed to enter hostnames. In my case I entered the hostname of my client which is a "dyndns" one.

And there the problems begin I described before: address is resolved correctly (at least when I do it manually on the machine) but relaying is denied :-/

Tobias

> 
> --
> Chris Gebhardt
> VIRTBIZ Internet Services
> Access, Web Hosting, Colocation, Dedicated
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