What do I should offer to get in dkim, spf & sender id for server?

To send your email through the server, you need a few things.

To start with, you have to worry about your IP being a fixed IP instead of a dynamic IP. If you have a dynamic IP, most servers will deny your mail.

The 2nd thing you need to bother with is a reverse DNS. Now, you need to have a reverse DNS for your IP, so your IP must reverse DNS lookup to your domain. Now that you have actually that cared for, the other things you have to stress about are DKIM, SPF, and Sender ID. Now, the Sender ID and SPF are only focused on your DNS server - they have nothing to do with your email server at all. DKIM has to do with both, so you need to establish one part in your mail server and an additional to your DNS.

So, for SPF, just what you can do is there’s a great deal of SPF power generators, so to speak, and you could look it up on the Net and find “SPF Generator.” Now, with that said generator, you specify which IP addresses and which DNS addresses you need to enable access from, and it will create a string that you will have to put into your DNS record.

With Sender ID, it’s very comparable, and you can locate it. However, Sender ID is not being extensively used a lot - I would even skip it if you don’t actually need it for something really certain.

DKIM as well, it’s rather optional. You have DKIM generators, and you should create a pair of tricks - however, it’s very specific to the server you are utilizing.