I recommend using a distribution list instead of an alias to ensure that you don't have a single point of failure π€·
Aliases allow you to have multiple email addresses that point to a single mailbox. A distribution list sends to multiple email addresses when you email a single email address.
The usual suspects are identified in the following documents: RFC 822 & RFC 2142.
Implementation gotchas:
- GMail: Reserved aliases for spam and abuse policy in Gmail and Google Workspace
- Azure Active Directory: Highly privileged email aliases that can only be created by an Azure AD global administrator
- Abuse@ / Abus@ (french)
- Admin@ and Administrator@
- Hostmaster@
- Postmaster@
- Security@
- SSL-Admin@
- Privacy@
- Webmaster@
- Help@
- HR@, RH@ (french), Careers@, or Jobs@
- Info@, Inquiries@, or Contact@
- Legal
- Sales@, Order@, or Billing@
- Support@
- noReply@
- no_reply@
- no.reply@
- doNotReply@
- do-not-reply@
- Contact@
- Default@
- Editor@
- Editorial@
- Email@
- Events@
- Feedback@
- Mail@
- Media@
- News@
- Newsletter@
- Noc@
- Office@
- Ops@
- Pr@
- Press@
- Pressrelease@
- Root@
- Secure@
- Service@
- Usenet@