Additional services

This article gives two examples on how to access some additional supporting services in Pouta. These services are not strictly part of cPouta, but they provide extra functionality to make the service more useful.

Sending e-mail from cPouta

Sometimes you need to be able to send e-mail from a cPouta virtual machine. Maybe it's notifications when something happens, or registration confirmation e-mails.

We're now providing a service to do this. The service is still in the evaluation stages, and we might make changes to the service based on our experience and any feedback we get.

To use this service, you need to configure your mail transfer agent (MTA) to use the following SMTP relay server (a.k.a. smarthost):

smtp.pouta.csc.fi:25

The server does not require authentication.

When sending e-mail you need a valid "Sender" address in your e-mails such as your university email address, since this will be validated by the SMTP server. Please note that this is a different email header attribute than the "From" attribute.

If you want to set up any services on cPouta that generate a large amount of SMTP traffic (e.g. public mailing lists), please contact CSCĀ Service DeskĀ to coordinate this.

DNS services in cPouta

cPouta does not currently offer integrated nameservice management.

All our floating IPs are mapped to a default hostname, for example

vm0120.kaj.pouta.csc.fi

To use your own DNS name for your virtual machine, simply configure your own DNS server to point the domain name to the floating IP that the virtual machine is using.

For most services these forward DNS records are enough. Some services also require reverse DNS lookups to work. This means that we have to configure our DNS server to say that the floating IP you are using resolves to the domain name your are using.

You can request reverse DNS mappings.

We reserve the right to clean up old reverse DNS records where the forward DNS records do not match anymore. We will also remove the reverse records when closing the project.