01:31
Faizan
Every once in a while, it happens: You send an email to someone, and you receive a message from a mail server--either yours or your recipient's--stating that your email couldn't be delivered. Said in another way, your email has bounced.
Hard Bounces
If an email bounces because your recipient's address was invalid, it's known as a hard bounce. This can be the result of mistyping an email address or using an address that's no longer valid. Hard bounces happen when the domain name is nonexistent or the recipient's name is unknown.
Soft Bounces
If an email reaches your recipient's mail server but bounces back before it can be delivered, it's known as a soft bounce. This kind of bounce usually happens when the recipient's mailbox is full.
Relay Problems
As a means of winnowing out spam, Internet service providers generally require that a recipient's mail server must know the sender's mail server. Relay problems that culminate in bouncing email arise when Internet service providers disagree on what it means to "know" a sender's mail server.
Temporary Problems
Mail servers can experience temporary glitches, resulting in bounced emails. These result in error messages which notify the sender that a connection has timed out or that resources are temporarily unavailable. These problems tend to resolve themselves.
Hard Bounces
If an email bounces because your recipient's address was invalid, it's known as a hard bounce. This can be the result of mistyping an email address or using an address that's no longer valid. Hard bounces happen when the domain name is nonexistent or the recipient's name is unknown.
Soft Bounces
If an email reaches your recipient's mail server but bounces back before it can be delivered, it's known as a soft bounce. This kind of bounce usually happens when the recipient's mailbox is full.
Relay Problems
As a means of winnowing out spam, Internet service providers generally require that a recipient's mail server must know the sender's mail server. Relay problems that culminate in bouncing email arise when Internet service providers disagree on what it means to "know" a sender's mail server.
Temporary Problems
Mail servers can experience temporary glitches, resulting in bounced emails. These result in error messages which notify the sender that a connection has timed out or that resources are temporarily unavailable. These problems tend to resolve themselves.
Posted in: email
