internet -> firewall DMZ-> assp -> trendmicro IMSS -> firewall inside ->
Exchange
example incoming mail with assp list (trendmicro log)
Scan Queue Size: <0> Current Connections: <1> [c38:a84]
ACL check OK, connection accepted from peer <assp> [c38:a84]
<< HELO lists-outbound.sourceforge.net [c38:400]
>> 250 imss Hello [192.168.52.212] [c38:400]
<< MAIL FROM:<[EMAIL PROTECTED]> [c38:400]
>> 250 <[EMAIL PROTECTED]>: Sender Ok [c38:400]
<< RCPT TO:<me> [c38:400]
>> 250 <me>: Recipient Ok [c38:400]
<< DATA [c38:400]
>> 354 imss: Send data now. Terminate with "." [c38:400]
Exchange -> firewall DMZ -> assp -> trendmicro IMSS -> firewall outside ->
internet
example outgoing mail (trendmicro log)
Scan Queue Size: <0> Current Connections: <0> [3bc:b08]
ACL check OK, connection accepted from peer <192.168.52.212> [3bc:b08]
<< EHLO exchange.mydomain.fr [3bc:768]
>> 250-imss supports the following ESMTP extensions: [3bc:768]
>> 250-SIZE 20480000 [3bc:768]
>> 250-DSN [3bc:768]
>> 250-8bitmime [3bc:768]
>> 250 OK [3bc:768]
<< MAIL FROM:<[EMAIL PROTECTED]> SIZE=3505 [3bc:768]
>> 250 <[EMAIL PROTECTED]>: Sender Ok [3bc:768]
<< RCPT TO:<[EMAIL PROTECTED]> [3bc:768]
ACL-relay check OK, relay email accepted from peer <192.168.52.212> [3bc:768]
>> 250 <[EMAIL PROTECTED]>: Recipient Ok [3bc:768]
<< DATA [3bc:768]
>> 354 imss: Send data now. Terminate with "." [3bc:768]
all outside smtp are using HELO not EHLO maybe it's not a problem ;) I try to
understand
Jérôme
Date: Tue, 23 Jan 2007 12:27:32 +0100From: [EMAIL PROTECTED]: [EMAIL
PROTECTED]: Re: [Assp-user] whitelisting for large messages possible?2007/1/23,
Fritz Borgstedt <[EMAIL PROTECTED]>:
May be no incoming mail is telling your server the size. (ESMTP
notsupported)Or is there another smtp-proxy between the outside mailservers and
assp?Some firewalls have a smtp-proxy functionality... Such a smtp-proxy may
filter some or all esmtp commands...
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