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Can I use a
non-existing
sender
FROM:
email address to
broadcast?
Broadcasting emails with a fake or
non-existing FROM: email address usually result in bounced
(undeliverable) mails and you may get error message like this: (or ISPs simply
accept and delete your mails without notification).
| 572 Relay not authorized or Not local host… not a gateway
550 This address is not allowed or
Requested action not taken: mailbox unavailable
572 and 550 RFC delivery status notification
seems to indicates: The setting of the From Address
are incorrect and/or an attempted was made to deliver but there was a
non fatal error and it will be retried and/or some change to the message
destination must be made for successful delivery.
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Most ISP mail server
have some requirements for outgoing or return REPLY TO email addresses as
well as performing a reverse
nslookup
to
prevent and disallow you to send emails to another ISPs SMTP
mail server--If the sender or recipient is a non-local user
and to
protect the mail server from being used by spammers to relay their messages by
using another company’s network and computer resources.
See:
Blacklist
nslookup a
DNS whois tool that perform forward and reverse DNS queries for the current
domain address (to get an
IP Address of a hostname and hostname of the IP address).
Non-local user? Many ISPs mail server prevent
relaying of SPAM by not allowing emails to be sent--that is outside
the sender domain, meaning that;
MAIL FROM
or REPLY TO is using an email domain that
is different from the log-in domain address.
|
551 User not local, please try <forward-path> or
Invalid Address: Relay request denied RFC delivery status notification seems to
indicates: The recipient's email address have changed and your ISP mail server is forwarding it back to you and/or your ISP SMTP mail server does not accept email when neither the
sender nor the
recipient is a non local user. |
Many ISP filters
incoming emails and automatically delete mails
where the TO address is different from the actual
recipient address-delete not bounced-hence you
won't know if the message actually got to the intended recipient.
See:
Email Filtering
Notes: If you are using your own mail
server program
See:
Mail Server FAQs
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eMail Broadcast
FAQ
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