In order to my site be able to send emails, socialengine script, i think i need to follow this tutorial, right?
"Basic Postfix Email Gateway on Ubuntu 10.04"

Well, if that´s right, i have some doubts:

1. During the configuration of postfix, the documentation says:


*Do i make up my system mail name? or is the same FQDN i created in /etc/hosts ? The documentation confused me?
*Do i need to set the reverse DNS for my linode´s IP to the system mail name?

Thanks for getting me starting, i´ll have some questions later.

If you actually need your emails to be delivered, I would look into the SaaS options for email. I spent months trying to configure my system to get delivery to yahoo and aol. It never worked. A yahoo rep frankly told me that they only deliver emails from large, established players.

Look into Amazon's SES. It's new, looks pretty awesome, and is CHEAP. I predict they will put most of the other players out of business.

Whatever you have set as the reverse DNS for your IP is what you should use for the system mail name.

Even mail from quite large organisations who do not have Yahoo's blessing fail to get through -- so Yahoo are, in effect, useless as a mail provider.

_________________
/ Peter

Thanks guys. I don´t want to host any emails, i just want to get my site working, and it needs to send confirmation emails to users.
Do you think postfix is the right way to go?

Yes postfix is fine, for you FQDN and rDNS set it to whatever is in /etc/hostname

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How to ask for help
1. Give details of your problem
2. Post any errors
3. Post relevant logs.
4. Don't hide details i.e. your domain, it just makes things harder
5. Be polite or you'll be eaten by a grue

My FQDN is 'grevan.domain.com'.

In postfix configuration i set 'grevan.domain.com' as my system mail name. Then i went to set reverse DNS - In "Perform a forward lookup" a put 'grevan.domain.com', but

How do i set reverse dns?
Thanks

I figured it out that i can only set the reverse DSN to a domain i created a domain zone for.
But, then, do i have to create a domain zone for 'grevan.domain.com' and use it in the reverse DNS?

In the zone for domain.com you want to create an A record for grevan and give it the IP address of your linode. See http://library.linode.com/dns-guides/co ... de-manager

Once that has had a chance to update you will be able to set your reverse DNS to that name.

Thanks Stever, that help me.

Reading the socialengine script documentation it says:


Do you think i need only to make this path correct (it´s commented, disable, in my php.ini), but i think i need to install postfix either. Do you think?

You do need to install postfix to send email, postfix provides the sendmail functionality, you may need to modify your sendmail path afterwards but probably not, I didn't need to.

_________________
Paid support
How to ask for help
1. Give details of your problem
2. Post any errors
3. Post relevant logs.
4. Don't hide details i.e. your domain, it just makes things harder
5. Be polite or you'll be eaten by a grue

Thanks obs.

So recapitulating:

1. Install postfix
2. Configure on postfix my system mail name to "grevan.domain.com"
3. Create a DNS zone to "domain.com", add an A Record "grevan.domain.com"
4. Set the reverse DNS to "grevan.domain.com" (still can´t set the reverse DNS, maybe the A record is not resolved...)

* I´m actually using "domain.com", do i have to use my real domain name?

Is that it so far?

Thanks guys

After reloading postfix i get this:

[quote="grevan"]Thanks guys. I don´t want to host any emails, i just want to get my site working, and it needs to send confirmation emails to users.
Do you think postfix is the right way to go?[/quote]

Like I said, it depends on if you want your people to actually receive your confirmation emails. If they are using yahoo, they won't. You can get around this sometimes by telling them on the confirmation page that if they don't receive your emails to check their spam folders. Users often don't, though.

That being said, my setup uses postfix unless it detects a yahoo or aol email address, in which case it smpt's to gmail to send using their services (I have a google apps account).

To gain delivery to hotmail and live you also need to configure domainkeys and Microsoft's ID service (I forget what it is called at the moment).

Honestly, if I had to to it again I would just send everything via smtp to gmail and setup Amazon SES if I needed to send out over 500 per day. And actually, when I get some spare time I am going to move over that way anyways. Rolling your own is just asking for punishment and frustration -- if you actually care about having your emails delivered, that is.