What is internal bounce?

Created by Jitender Saini, Modified on Thu, 2 May at 4:49 PM by Jitender Saini

There are 3 types of bonce categories as follows.

Hard Bounces - A hard bounce occurs when the email address is no longer valid on the target server, has been blocked or disabled, or if the target server itself is non-existent.

Soft Bounce -Soft bounces differ from hard bounces as they can occur due to temporary issues such as the server or account being temporarily unavailable, insufficient disk space to store the email on the server, or the receiving server being too busy.

Internal Bounce - Internal bounces can occur due to factors such as spammy content in your email, your IP/Server/domain being listed in a blacklist, a range of IPs being listed in a blacklist, links present in your email content being listed, or subject lines being considered spam. These issues are related to your email's content or your IP/domain's reputation.

When it comes to email delivery, ISPs like Gmail, Yahoo, and Outlook scrutinize various elements such as your subject line, content, links within your email, sending speed, and the reputation of your IPs/domain.

Some ISPs, like Outlook, Hotmail, and Live IDs, have strict policies regarding accepting emails.

In bounce messages, you might see rejections due to certain IPs (not necessarily yours, but others from the same network) being on the block list, leading to non-acceptance of the email.

There any many email sender who did this kind of bulk mailing and techguruclub.in is a popular choice among them.

There are various types of senders, including some who send spam. When a significant number of these senders use their servers for such mailings, ISPs like Outlook, Hotmail, and Live may block the entire network rather than just individual IPs.

Each ISP has its own set of rules and regulations.

Unfortunately, this issue cannot be easily resolved as it depends on the discretion of the ISPs regarding which emails they choose to accept and from which senders or networks.

These things are very common due to nature of this kind of mailing that few of the ISPs will be rejected and bounce back your emails, so it will be suggested to focus other ISPs which will still accept your emails and focus on your overall open rate.