You have a firewall with SMTP Proxy which cannot handle ESMTP commands.
Look this detail ..... when you telnet localhost, you can see the server
banner:
> 220 ogo.altkom.pl ESMTP
But when you're outside your network, you'll see:
> 220 *******************
Banners are different, which means someone is 'getting' or proxying your
smtp connection. And because of this banner (*********), we can assume that
we're dealing with a Cisco PIX firewall, which cant handle ESMTP well.
Solution: disable SMTP Proxy capabilities on the Cisco PIX.
Believe me, courier version has NOTHING to do with this problem.
Sincerily,
Leonardo Rodrigues
----- Original Message -----
From: "Piotr Baranowski" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, September 14, 2003 2:22 PM
Subject: [courier-users] Missing E(SMTP) functionality ?
> Hi !
>
> Today i recompiled the latest version of courier-mta and i noticed some
> very strange behaviour of my fav mail soft :)
> I rebuilt the RPMS, as usual from the tarball, uninstalled the previous
> version 0.42.2, and installed the latest 0.43.2.
> After I changed the config files to fit my needs i noticed that the
> ESMTP server works very strange.
>
> When i connect from localhost i see the beast workin':
> [EMAIL PROTECTED] root]# telnet ogo.altkom.pl 25
> Trying 192.168.254.19...
> Connected to ogo.altkom.pl.
> Escape character is '^]'.
> 220 ogo.altkom.pl ESMTP
> EHLO ogo
> 250-ogo.altkom.pl Ok.
> 250-AUTH LOGIN CRAM-MD5
> 250-AUTH=LOGIN CRAM-MD5 X-NETSCAPE-HAS-BUGS
> 250-STARTTLS
> 250-XVERP=Courier
> 250-XEXDATA
> 250-XSECURITY=NONE,STARTTLS
> 250-PIPELINING
> 250-8BITMIME
> 250-SIZE
> 250 DSN
> quit
> 221 Bye.
> Connection closed by foreign host.
>
> Everything works fine right ? No !
> When I test the connection from the network i see somethin' like that:
> Trying 195.94.220.19...
> Connected to ogo.altkom.pl.
> Escape character is '^]'.
> 220 *******************
> EHLO ogo
> 502 ESMTP command error
> quit
> <here it stops for a while (10 secs.)>
> 221 Bye.
> Connection closed by foreign host.
>
> Anybody knows what is wrong ?
> I checked the logfiles and it says nothing to me:
> tail /var/log/messages
> Sep 14 19:17:25 ogo courieresmtpd: started,ip=[::ffff:62.179.11.26]
> Sep 14 19:17:33 ogo courieresmtpd:
> error,relay=::ffff:62.179.11.26,msg="502 ESMTP command error",cmd: XXXX
ogo
>
> That's all.
> The system is RH 9 with updates.
>
> Any clues ?
>
> king regards
> Piotr
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