> On 28 Nov 2005 at 18:02, Latrell wrote about
> "[exim] Problem with smtp authentica":
>
> | I have a problem with smtp authentication.
>
> Not that I can see.
>
> | When I use mail command to send mail, I got the following error msg:
> | SMTP>> AUTH LOGIN
> | SMTP<< 334 VXNlcm5hbWU6
> | SMTP>> ********
> | SMTP<< 334 UGFzc3dvcmQ6
> | SMTP>> ************
> | SMTP<< 235 2.7.0 Authentication successful.
> | SMTP>> MAIL FROM:<root@Latrell> SIZE=1350 AUTH=root@Latrell
> | SMTP>> RCPT TO:<latrell@???>
> | SMTP>> DATA
> | SMTP<< 454 5.7.3 Client does not have permission to Send As this
sender.
> | SMTP>> QUIT
> |
> | It seems my authentication to mail server is successful.
>
> Yes. So your problem is not with authentication.
> yes, it seems a sender prolem now.
> | However, when I use root@Latrell as a sender to send mail,
> | if failed because it doesn't match username/passwd I provided to the
mail server.
>
> What makes you think that that is the reason?
> If I use exim -f <usrname_on_mail_server@???>
dest@??? , the mail can be sent.
Any other name else can't be sent.
> | Using root@Latrell (I user root to login to my machine "Latrell") is not
a
> | valid sender, thus it complained I can't use it as this sender.
>
> That seems more likely. It also seems like a very good reason to
> reject the message.
>
> | Does anyone know how to fix the problem? Maybe we have two aspects:
> | 1. pass sender check
>
> You could bypass whatever part of the RCPT ACL is causing the
> rejection (most likely a verify = sender) for authenticated sessions,
> but IMHO that would be a Bad Idea.
Isn't ACL concerned about incoming mail? Am I thinking wrong?
Is ACL has anything to do about sending a mail?
>
> | 2. provide sender the same as username/passwd I provided to mail server.
>
> Put another way, provide a valid address as sender. That's the right
> answer.
>
> | How can I do if any of the two aspects workable? Can I rewrite MAIL FROM
address?
>
> Why can't you just configure the MUA or script you are using to send
> the message to specify a valid sender address? I don't see any
> reason to try to work around your broken client in exim.
>
> | Thanks in advance. Any idea will all be appreciated.
> | My exim.conf about authentication is as follows:
> |...
>
> What we needed to see is the ACL that's causing the rejection
> (acl_check_rcpt).
>
> - Fred
>
>
Hi, Fred:
I'm appreciated with your reply.
Yesterday I add return_path=usrname_on_mail_server@???, and I can
see the sender check is ok.
However, the same error shown eventually.
Here is the message.
SMTP>> AUTH LOGIN
SMTP<< 334 VXNlcm5hbWU6
SMTP>> ********
SMTP<< 334 UGFzc3dvcmQ6
SMTP>> ************
SMTP<< 235 2.7.0 Authentication successful.
SMTP>> MAIL FROM:<usrname_on_mail_server@???> SIZE=1343
AUTH=root@Latrell
SMTP>> RCPT TO:<dest@??? >
SMTP>> DATA
SMTP<< 250 2.1.0 usrname_on_mail_server@???....Sender OK
SMTP<< 250 2.1.5 dest@???
SMTP<< 354 Start mail input; end with <CRLF>.<CRLF>
SMTP>> writing message and terminating "."
SMTP<< 454 5.7.3 Client does not have permission to Send As this sender.
SMTP>> QUIT
I don't know what cause the error in that I've passed the sender check. Exim
only used as a client to authenticate remote mail server,
and then send mails. I will never use exim to be a server to receive mails.
The following is my ACL part:
begin acl
acl_check_rcpt:
accept hosts = :
deny domains = +local_domains
local_parts = ^[.] : ^.*[@%!/|]
deny domains = !+local_domains
local_parts = ^[./|] : ^.*[@%!] : ^.*/\\.\\./
accept local_parts = postmaster
domains = +local_domains
require verify = sender
accept domains = +local_domains
endpass
verify = recipient
accept domains = +relay_to_domains
endpass
verify = recipient
accept hosts = +relay_from_hosts
accept authenticated = *
deny message = relay not permitted
Please points out the mastakes.
Thanks for your help again.
Best.
Latrell.
