Topic: MAILER-DAEMON - failure notice

[Daley]

Hi,

I'm running SME 5.6U4 server only.

I got the bounce back mail error sending some mails to yahoo.com unexpectedly,  pls advise.

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Hi. This is the qmail-send program at pathlab.com.my.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

:
64.157.4.78 failed after I sent the message.
Remote host said: 552 Put ,E=\r\n at the end of Mether, Mtcp, or Msmtp in
sendmail.cf if you are using Solaris 2.5 (fixed in 2.5.1). I cannot accept
messages with stray newlines.  Many SMTP servers will time out waiting for
\r\n.\r\n.
----

Thank you.
Daley

[Ben Morrisson]

I know yahoo is currently updating to introduce a 'tmda' type system to their email and has actively been tightening up their security, SPAM, and RFC compliance.
Have had a lot of spam recently bouncing around my system from yahoo or to yahoo.

wonder if this might have some implications for you