This is the total amount of data transfered by mails.
Units are in KB, MB or GB (KiloBytes, MegaBytes or GigaBytes)

All time related statistics are based on server time.

Here, reported data are: average values (calculated from all data between the first and last email in analyzed range)

Here, reported data are: cumulative sums (calculated from all data between the first and last email in analyzed range)

Success: Non standard success response

Success: System status, or system help repl

Success: Help message

Success: Service ready

Success: Service closing transmission channel

Success: Your ISP mail server have successfully executes a command and the DNS is reporting a positive delivery

Success: Your message to a specified email address is not local to the mail server, but it will accept and forward the message to a different recipient email address

Success: Recipient cannot be verified but mail server accepts the message and attempts delivery

Success: Indicates mail server is ready to accept the message or instruct your mail client to send the message body after the mail server have received the message headers.

Temporary error: This may be a reply to any command if the service knows it must shut down.

Temporary error: Your ISP mail server indicates that an email address does not exist, mailbox is busy or mail temporarly refused. It could be the network connection went down while sending, or it could also happen if the remote mail server does not want to accept mail from you for some reason i.e. (IP address, From address, Recipient, etc.)

Temporary error: Your ISP mail server indicates that the mailing has been interrupted, usually due to overloading from too many messages or transient failure is one in which the message sent is valid, but some temporary event prevents the successful sending of the message. Sending in the future may be successful

Temporary error: Your ISP mail server indicates, probable overloading from too many messages and sending in the future may be successful

Temporary error: Some mail servers have the option to reduce the number of concurrent connection and also the number of messages sent per connection. If you have a lot of messages queued up it could go over the max number of messages per connection. To see if this is the case you can try submitting only a few messages to that domain at a time and then keep increasing the number until you find the maximum number accepted by the server

Permanent error: Syntax error, command unrecognized or command line too long

Permanent error: Syntax error in parameters or arguments

Permanent error: Command not implemented

Permanent error: Server encountered bad sequence of commands

Permanent error: Command parameter not implemented

Permanent error: You must be pop-authenticated before you can use this SMTP server and you must use your mail address for the Sender/From field.

Permanent error: Access denied. A sendmailism ?

Permanent error: Sending an email to recipients outside of your domain are not allowed or your mail server does not know that you have access to use it for relaying messages and authentication is required. Or to prevent the sending of SPAM some mail servers will not allow (relay) send mail to any e-mail using another company’s network and computer resources.

Permanent error: User not local: please try or Invalid Address: Relay request denied

Permanent error: Requested mail action aborted: exceeded storage allocation. ISP mail server indicates, probable overloading from too many messages.

Permanent error: Requested mail action not taken: mailbox name not allowed. Some mail servers have the option to reduce the number of concurrent connection and also the number of messages sent per connection. If you have a lot of messages queued up (being sent) for a domain, it could go over the maximum number of messages per connection and/or some change to the message and/or destination must be made for successful delivery.

Permanent error: Requested mail action rejected: access denied

Permanent error: Too many duplicate messages. Resource temporarily unavailable Indicates (probable) that there is some kind of anti-spam system on the mail server.

This is an unknown error. A such error is not reported by the mail server but by the maillogconvert.pl tool when it detects in the log that the sending was not successfull and the log file does not contains any explanation of the error.