This is a semi documented problem, I've seen it on HF1 but most people seem
to have found it on HF2, some tweaks which may reduce the number of dropped
mails are to set the sender field as * instead of just blank, also to set
smartdefence not to add a recieved header. There's rumour that this problem
may have been fixed in HFA308 but I haven't heard anything back on that yet.
The solution that a lot of people have gone for (including myself) is simply
to avoid using the smtp security server and use a real mail server. This
topic has been popping up on both this list and the phoneboy list for
several months now and there has been no public response from checkpoint.
Uly
----- Original Message -----
From: "Lancer" <lancer81 AT CABLESPEED DOT COM>
To: <FW-1-MAILINGLIST AT AMADEUS.US.CHECKPOINT DOT COM>
Sent: Friday, May 16, 2003 8:40 PM
Subject: [FW-1] smtp 550 mailbox unavailable
> Every so often the firewall sends a 550 Mailbox unavailable response on
> inbound mail and logs it as content security - access denied. If the user
> resends it will work. This started after we upgraded from 4.1 SP5.
>
> Using a Sniffer I found this occurs when the firewall waits about a minute
> after the connection is opened before sending it's 220 message. If
firewall
> responds quickly the process succeeds.
>
> remote server: syn
> firewall: syn-ack
> remote server: ack
> ~60sec delay
> firewall: 220 cp fw-1...
> remote server: ehlo
> firewall: 250 hello
> remote server: mail from
> firewall: 250 ok
> remote server: rcpt to
> firewall: 550 mailbox unavailable
>
> NG FP3 HF1 on Solaris 8 using Trend ISVW 3.7
>
> _____________________________________________________________________
> This mail was sent by Cablespeed Webmail
>
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