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I'm using mutt&postfix on CentOS 6.2:

  • mutt-1.5.20-2.20091214hg736b6a.el6_1.1.x86_64
  • postfix-2.6.6-2.2.el6_1.x86_64

When I try to send mail to my company mailbox, I receive an error:

mutt -s "test" myname@ourcompany.com < /home/mail.txt

error from postfix:

: host out1.ourcompany.com[] said: 555 Syntax error (in reply to MAIL FROM command)

Then I try to use service sendmail as SMTP server, but also failed:

**----- The following addresses had permanent fatal errors ----- (reason: 555 Syntax error) ----- Transcript of session follows ----- ... while talking to out1.ourcompany.com.:

MAIL From: SIZE=667 <<< 555 Syntax error 554 5.0.0 Service unavailable**

Any body can tell me why? Thanks!!!! I can make sure DNS is OK, and I set realname "root@myserver" in /etc/Muttrc

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1 Answer 1

Instead of using a local MUA,which may be configured in a myriad of ways, start by using telnet:

$telnet 25
>HELO me.at.home
>MAIL FROM: me@home
>RCPT TO: some@where.else
>Subject: Test

Then report what that says, and post the logs of the transaction.

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