I use postfix (basically postfix admin) to define my e-mail inboxes and SMPTs. Say I have a one e-mail inbox:
maininbox@mydomain.com
Now I have a few aliases. Say I have the alias:
maria@mydomain.com
Now the last alias receives e-mails and puts them in the first inbox. I can login to that inbox and receive e-mails from that alias.
The problem:
Now I would to send e-mails from that alias. I want the sender to be maria@mydomain.com
. How can I do that? I can't login to my smtp server with that alias.
Please advise.
Best Answer
You can't login using an alias, because it's not an email account, just a pointer to a real account. If you want to login using it, you need to create an account with the same name (and had to delete the alias first).
But all if you need is to send an email with that address as from address, you may setup the email client software accordingly. It is possible to configure more than one optional email addresses, and one of them can be selected as sending address while sending email.
For example: here is How to send from other email address in Outlook 2013. But there are some issues that needs to be noted (quoted from above link, applicable in general):
For Thunderbird you can do this by configuring multiple identities. Here is how: Using Identities in Thunderbird