Hello dear members.
When a user creates a mail message, when pressing"send", mail passes OBLIGATORILY via ISP's submission agent (MSA)? So, if I have a domain, and eg with Linode+domain I create a SMTP relay agent (MDA), although if I have asked Linode (and Linode has agreed) and opened my IN+OUT 25 SMTP server's ports), the first step is that mail will pass through ISP's MSA?
Thank you!
When a user creates a mail message, when pressing"send", mail passes OBLIGATORILY via ISP's submission agent (MSA)? So, if I have a domain, and eg with Linode+domain I create a SMTP relay agent (MDA), although if I have asked Linode (and Linode has agreed) and opened my IN+OUT 25 SMTP server's ports), the first step is that mail will pass through ISP's MSA?
Thank you!