Hi,
since last week, I can't send emails from my server, I get this error
message:

/home/root #mail -v sylvainouellet@yahoo.com <toto
sylvainouellet@yahoo.com... Connecting to mx1.mail.yahoo.com. via
esmtp...
sylvainouellet@yahoo.com... Connecting to mx2.mail.yahoo.com. via
esmtp...
sylvainouellet@yahoo.com... Connecting to mx3.mail.yahoo.com. via
esmtp...
sylvainouellet@yahoo.com... Connecting to mx4.mail.yahoo.com. via
esmtp...
sylvainouellet@yahoo.com... Deferred: The connection is refused by
mx4.mail.yahoo.com.

What is this error, and why?


Port 25 seems ok...

/home/root #tn localhost 25
Trying...
Connected to loopback.
Escape character is '^T'.
220 Server ESMTP Mail Portail Mobile v2
HELP
214-This is Sendmail version AIX4.3/8.9.3
214-Topics:
214- HELO EHLO MAIL RCPT DATA
214- RSET NOOP QUIT HELP VRFY
214- EXPN VERB ETRN DSN
214-For more info use HELP <topic>.
214-To report bugs in the implementation send email to
214- sendmail-bugs@sendmail.org.
214-For local information send email to Postmaster at your site.
214 End of HELP information


Thank you

In article <1d90f8eb.0407020234.1de865fa@posting.google.com >,
SylvainO <sylvainouellet@yahoo.com> wrote:
>Hi,
>since last week, I can't send emails from my server, I get this error
>message:
>
>/home/root #mail -v sylvainouellet@yahoo.com <toto
>sylvainouellet@yahoo.com... Connecting to mx1.mail.yahoo.com. via
>esmtp...
>sylvainouellet@yahoo.com... Connecting to mx2.mail.yahoo.com. via
>esmtp...
>sylvainouellet@yahoo.com... Connecting to mx3.mail.yahoo.com. via
>esmtp...
>sylvainouellet@yahoo.com... Connecting to mx4.mail.yahoo.com. via
>esmtp...
>sylvainouellet@yahoo.com... Deferred: The connection is refused by
>mx4.mail.yahoo.com.
>
>What is this error, and why?
>
>
>Port 25 seems ok...
>
>/home/root #tn localhost 25
>Trying...
>Connected to loopback.
>Escape character is '^T'.
>220 Server ESMTP Mail Portail Mobile v2
>HELP
>214-This is Sendmail version AIX4.3/8.9.3
>214-Topics:
>214- HELO EHLO MAIL RCPT DATA
>214- RSET NOOP QUIT HELP VRFY
>214- EXPN VERB ETRN DSN
>214-For more info use HELP <topic>.
>214-To report bugs in the implementation send email to
>214- sendmail-bugs@sendmail.org.
>214-For local information send email to Postmaster at your site.
>214 End of HELP information

Hello SylvainO,

The problem you're having with sending mail to Yahoo is unrelated
to the success you have connecting to your own local mail server.

Try telneting to port 25 of the Yahoo MX hosts and see what happens;
based on your report above, I'd guess that you would be unable to
connect manually also.

You might try using ping and traceroute to get a handle on why this
is, i.e., is there a general lack of connectivity between you and
Yahoo or is it only to their SMTP port. Can you reach Yahoo's HTTP
server? Can you still send mail to Internet sites other than Yahoo?

Did someone install a firewall between your AIX machine and the
Internet recently perhaps? Did your ISP begin blocking outgoing
SMTP as a "spam prevention" measure?

Ken
--
Ken Bell :: kenbell@panix.com :: (212) 475-4976 (voice)