Sender
Domain Not Found
----- The following
addresses had permanent fatal errors -----
<JDOE@AOL.COM>
----- Transcript
of session follows -----
... while talking to b.mx.aol.com.:
>>> MAIL From:<JDOE@YOUDROMAIN.COM>
<<< 550 <JDOE@YOUDROMAIN.COM>... Sender domain not
found in DNS
550 <JDOE@AOL.COM>... Service unavailable
In
an attempt to stem the flow of spam e-mail into their systems, many
mail systems reject messages where the domain name part of the sender's
address (the part after the "@") cannot be found in the
DNS. This is effective against some spam because spammers often
send out their mass mailings under phony addresses.
However
it also turns away messages from legitimate senders whose e-mail
addresses are incorrectly entered in their mail programs. In the
example above YOURDOMAIN.COM customer "jdoe" tried to
send a message to jdoe@aol.com. However, YOURDOMAIN.COM's John Doe
mistyped the domain name part of his address as "youdromain.com"
instead of "yourdomain.com" when he set up his mail program.
The AOL mail system couldn't find a domain called "youdromain"
in the DNS, so it rejected the message.
This
will also block mail from legitimate senders who intentionally alter
their e-mail addresses in their own anti-spam efforts ("jdoe@yourdomain.com.NOSPAM",
for example).
What
you should do:
Go
into your mail program's setup and make sure your e-mail address
is entered correctly, then resend your message.
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