Sending mail thru smart host that require username/password

Chris

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Jun 14, 2004, 9:11:53 AM6/14/04

to

Hello All-

I have a 'quick' question. I've been trying to setup sendmail on my
RH 8.0 box using sendmail to send mail thru an outside smtp host (that
I have an account on) that requires a username/password when sending,
all to avoid the dreaded 550 error.

The bottom line is I'm stumped, completely. I have no prior
experience to configuring sendmail, but I've tried many things, one
being enabling the SMART_HOST option in my sendmail.mc file.

So, my question is, if my ouput when I log into my smtp server is :

'telnet smtp.mymailhost.com 25'

and got (important info blanked out for obvious reasons):

telnet smtp.mymailhost.com 25
Trying xxx.xxx.xxx.x...
Connected to smtp.mymailhost.com.
Escape character is '^]'.
220 Welcome to Nemesis ESMTP server on mrelay
ehlo
250-Pleased to meet you
250-STARTTLS
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250-PIPELINING
250-8BITMIME
250-SIZE 20971520
250 HELP
quit
221 Bye
Connection closed by foreign host.

How do I send mail using sendmail to this smtp server that demands a
username/password, to avoid 550 errors?

Output of 'sendmail -d0.1 -bv' :

Version 8.12.8
Compiled with: DNSMAP HESIOD HES_GETMAILHOST LDAPMAP LOG MAP_REGEX
MATCHGECOS MILTER MIME7TO8 MIME8TO7 NAMED_BIND NETINET
NETINET6
NETUNIX NEWDB NIS PIPELINING SASL SCANF STARTTLS
TCPWRAPPERS
USERDB USE_LDAP_INIT

============ SYSTEM IDENTITY (after readcf) ============
(short domain name) $w = localhost
(canonical domain name) $j = localhost.localdomain
(subdomain name) $m = localdomain
(node name) $k = junior
========================================================

Recipient names must be specified

Thanks!

Chris

Benway

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Jun 14, 2004, 12:24:38 PM6/14/04

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On 14 Jun 2004 06:11:53 -0700, c_ca...@hotmail.com (Chris) wrote:

>Hello All-
>
>I have a 'quick' question. I've been trying to setup sendmail on my
>RH 8.0 box using sendmail to send mail thru an outside smtp host (that
>I have an account on) that requires a username/password when sending,
>all to avoid the dreaded 550 error.
>

My memory is a bit hazy on this but, try adding the following line to
/etc/mail/access:

AuthInfo:smtp.server.com "U:username" "I:username" "P:password"
"M:PLAIN"

Changing the server name, username and password to that of your
account. Then run make all in /etc/mail. This will tell sendmail to
always send this info by default.

You can test the above manually by uuencoding the details with:

[root@host1 root]# echo -en "username\x00username\x00password" |
uuencode -m /dev/stdout
begin-base64 644 /dev/stdout
dXNlcm5hbWUAdXNlcm5hbWUAcGFzc3dvcmQ=
====

Then once you've telnet'ed onto port 25 of the mailserver and issued a
helo do:

AUTH PLAIN dXNlcm5hbWUAdXNlcm5hbWUAcGFzc3dvcmQ=

--
Benway
Remove the SPAM

Chris

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Jun 15, 2004, 8:32:31 AM6/15/04

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Benway-

You are the man! Thanks so much. I don't know why I've had such a
hard time finding the answer to this question.

It was a matter of doing what you said, and enabling the SMART_HOST
option in the sendmail.mc file and doing a 'make all /etc/mail'.
Restart sendmail, and voila, it works!

Thanks again!

Chris

mikem42

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Jul 23, 2004, 7:52:52 PM7/23/04

to

This perfectly fixed the problem I was having trying to relay my email
through Verizon for my DSL account. The fun people at AOL and some
other locations were blocking me for having a dynamic IP address and
now I just relay it through outgoing.verizon.net and it works
perfectly.

Thanks a bunch for posting this!

PS. If you do `/sbin/service sendmail restart` under redhat it rebuilds
the configuration files as well as restarting sendmail so you can skip
the make step :-)

- Mike
http://3cats.us/
--
mikem42
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