sendmail errorless error

i normally test our mail servers using a telnet to port 25. but
something is very different about one mail server. our client hasnt
complained so im assuming the mail server works. but if i telnet in,
when i get to MAIL FROM: blah@domain.com, the response is simply:
553 5.3.0 blah@domain.com... >blah<@domain.com.

what does >this< mean?

any attempt to move on to RCPT TO: results in a need MAIL before RCPT
error.

"blah" and "domain.com" are legitimate, genuine user/domain run by this
mail server. this error does not happen if i "send" the mail as
user@some-domain-not-handled-by-this-mailserver.com.

its hard to look up an explanation of the error when there is no error
message...
can anyone explain this?

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Re: sendmail errorless error

Hallo,

I am no sendmail expert, but does 553 not mean "Relaying denied" ?? So you
have an error message from sendmail.

Enno

On Tuesday 15 June 2004 09:52, urgrue wrote:
> i normally test our mail servers using a telnet to port 25. but
> something is very different about one mail server. our client hasnt
> complained so im assuming the mail server works. but if i telnet in,
> when i get to MAIL FROM: blah@domain.com, the response is simply:
> 553 5.3.0 blah@domain.com... >blah<@domain.com.
>
> what does >this< mean?
>
> any attempt to move on to RCPT TO: results in a need MAIL before RCPT
> error.
>
> "blah" and "domain.com" are legitimate, genuine user/domain run by this
> mail server. this error does not happen if i "send" the mail as
> user@some-domain-not-handled-by-this-mailserver.com.
>
> its hard to look up an explanation of the error when there is no error
> message...
> can anyone explain this?
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-admin" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html

--
Groeten van

Enno Oosterhuis

e.oosterhuis@ewi.utwente.nl

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Re: sendmail errorless error

> I am no sendmail expert, but does 553 not mean "Relaying denied" ??
> So you have an error message from sendmail.

thats why i was confused, because normally i always get a "relaying
denied" message. as well as the error code.
but in any case, i figured out the reason. sendmail only permitted use
of user/domain combinations listed in virtusertable. if i used an
address not in there, i got the >error< problem.
but i dont understand why this is the case. some new anti-spam feature?
normally sendmail has always allowed me to claim to be whoever i want,
so long as i came from IPs allowed in relay.
anyway i thought virtusertable only affected incoming mail, but i guess
i was wrong.



>
> Enno
>
> On Tuesday 15 June 2004 09:52, urgrue wrote:
> > i normally test our mail servers using a telnet to port 25. but
> > something is very different about one mail server. our client hasnt
> > complained so im assuming the mail server works. but if i telnet in,
> > when i get to MAIL FROM: blah@domain.com, the response is simply:
> > 553 5.3.0 blah@domain.com... >blah<@domain.com.
> >
> > what does >this< mean?
> >
> > any attempt to move on to RCPT TO: results in a need MAIL before
> RCPT
> > error.
> >
> > "blah" and "domain.com" are legitimate, genuine user/domain run by
> this
> > mail server. this error does not happen if i "send" the mail as
> > user@some-domain-not-handled-by-this-mailserver.com.
> >
> > its hard to look up an explanation of the error when there is no
> error
> > message...
> > can anyone explain this?
> >
> > -
> > To unsubscribe from this list: send the line "unsubscribe
> linux-admin" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at http://vger.kernel.org/majordomo-info.html
>
> --
> Groeten van
>
> Enno Oosterhuis
>
> e.oosterhuis@ewi.utwente.nl
>
>
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Re: sendmail errorless error

urgrue wrote:

> i normally test our mail servers using a telnet to port 25. but
> something is very different about one mail server. our client hasnt
> complained so im assuming the mail server works. but if i telnet in,
> when i get to MAIL FROM: blah@domain.com, the response is simply:
> 553 5.3.0 blah@domain.com... >blah<@domain.com.
>
> what does >this< mean?

Essentially, it means that the check_mail ruleset resolved to:

$#error $@ 5.3.0 $: 553 >blah<@domain.com.

As for why that happens, try:

$ sendmail -bt
ADDRESS TEST MODE (ruleset 3 NOT automatically invoked)
Enter