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jc222 24 May 2022 10:44 PM

Sending email from one domain from another
 
Hello. I have two domains, xxx.com and yyy.com. xxx.com is our current site but we are eventually transitioning to yyy.com. We want emails sent from xxx.com to come from yyy.com. Current setup in fastmail is xxx.com emails are aliases. All yyy.com emails are users.

Is there a way to change xxx.com DNS so that I can use @yyy.com emails to send from xxx.com with Fastmail?

Thanks for any help!

BritTim 24 May 2022 11:40 PM

I am not completely certain that I understand your current setup. Assuming
  1. you have a Fastmail account associated with each yyy.com email address; and
  2. xxx.com is a domain administered by a Fastmail account.
You just define domain aliases for each xxx.com address, directing the messages to be delivered to the appropriate yyy.com account. Although the messages are delivered from [email protected], you simply do not define a sending identity for [email protected], and messages will automatically be sent out from the default [email protected] email address. Note, however, that the fact that your correspondents have sent to you as [email protected] will still be visible in your reply. Only the address you use to send the reply is [email protected] (along with any further replies by the original sender).

If xxx.com is not administered by a Fastmail account, it will be necessary to use forwarding in a way that will differ from one mail service to another, and you might also need to be careful about possible message delivery issues that can these days arise when using email forwarding.

If you describe your current setup more clearly, we can probably give you better advice.


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