The most common user problem is a full mailbox. Most systems have a limit on how much email is allow to reside on the server for each user, and once that limit is reached, there is no room to accept new incoming mail. The following are all examples of email error messages caused by a full mailbox:
SMTP error from remote mail server after RCPT TO:<email@example.com>:
452 <firstname.lastname@example.org> Mailbox size limit exceeded
<email@example.com>: User is over the quota. You can try again later.
<firstname.lastname@example.org>: host in7.example.com said:
552 <email@example.com>… Mailbox is full
Mailbox limit exceeded while appending message
550 <firstname.lastname@example.org>… Can’t create output
<email@example.com>: host mail9.example.com said:
552 Requested mail action aborted: exceeded storage allocation
This error will stop as soon as the recipient makes additional room in their mailbox usually by removing old messages or unwanted emails from webmail or increasing mailbox quota via cPanel >> Mail >> Email Accounts >> Change Quota.
If you have further questions, please do not hesitate to contact our support team.
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