Search found 280 matches

by Kiliman
Mon Sep 20, 2004 11:00 am
Forum: MailEnable Professional Edition
Topic: MailEnable Pro 1.5 beta -- GREAT GOING!
Replies: 14
Views: 10860

This would be an easy way for spammers to ruin the SPF protection. One of the benefits that SPF provides is that it links the IP address to the domain sending the email. This now allows you to do domain level blacklisting with more confidence. I believe that as SPF gains in popularity, you will sta...
by Kiliman
Fri Sep 17, 2004 8:16 pm
Forum: MailEnable Standard Edition
Topic: MTA pickup event question!!
Replies: 2
Views: 2549

Yes, use the SaveToFile() method on IBodyPart. You can download my Virus Scanner code for examples at http://www.volcanictech.com/files/mailenable/ One nice part about my code is that it will even go inside an embedded email message. I added support for this when some viruses were being sent that cl...
by Kiliman
Fri Sep 17, 2004 2:18 am
Forum: MailEnable Standard Edition
Topic: Suddenly can't receive e-mail
Replies: 6
Views: 5607

If you want inbound email to reach you, then SMTP must listen on port 25. No exceptions. To send outgoing email, your ISP must allow outbound port 25. I'm not sure I understand what you are doing. Changing your SMTP port will definitely prevent others from sending you email. If your ISP does not all...
by Kiliman
Wed Sep 15, 2004 8:08 pm
Forum: MailEnable Professional Edition
Topic: SPF in 1.5? Please!
Replies: 12
Views: 8362

Exactly. SPF was specifically designed to associate sending domains with a set of approved IP addresses. If you simply blacklist the IP once it fails SPF once, then you're right back to problems you have with the RBL in that it casts a wide net. With SPF, it is much more granular. Now when you get s...
by Kiliman
Wed Sep 15, 2004 2:31 pm
Forum: MailEnable Professional Edition
Topic: SPF in 1.5? Please!
Replies: 12
Views: 8362

Will ME use multiple failed SPF lookups as a mechanism for adding an IP to the blocked list? ... If not, maybe the MEFilter could track the IP and domains in the database portion and then when a set number is reached it can automatically update the denied list in ME.. Since SPF uses DNS to store th...
by Kiliman
Wed Sep 15, 2004 2:23 pm
Forum: MailEnable Professional Edition
Topic: Using Sophos EM Library with Mail Enable
Replies: 1
Views: 2208

The MTA simply launches the command line scanner for each message received. The scanner is run in a separate process from the MTA, so there is no reason to restart the MTA. I'm using McAfee and I have a script that downloads updates every hour. I've never had to restart the MTA. Hope this helps. Kil...
by Kiliman
Wed Sep 15, 2004 11:00 am
Forum: MailEnable Professional Edition
Topic: Interesting side effect of my virus filter script
Replies: 0
Views: 1565

Interesting side effect of my virus filter script

Here's an interesting side effect of my virus filter script that I use. Since I scan all body parts instead of just attachments, I got this virus alert from my filter. Subject: Virus Notification: Found the Phish-BankFraud.eml trojan !!! VIRUS NOTIFICATION: Message ID: D071C200B8724E4C86C654A3E63A1....
by Kiliman
Wed Sep 15, 2004 10:54 am
Forum: MailEnable Professional Edition
Topic: Suggestion: Secondary MX network
Replies: 8
Views: 6580

MartynK, yeah I realize that a lot of us already have backup MX. I have one through ZoneEdit. However, I'm sure there are plenty that don't. The main problem is that I pretty much have to accept all email coming from my secondary MX. It doesn't use any RBLs, it doesn't know what emails are valid so ...
by Kiliman
Tue Sep 14, 2004 5:38 pm
Forum: MailEnable Professional Edition
Topic: Suggestion: Secondary MX network
Replies: 8
Views: 6580

wouldn't whoever was administering it be able to read every piece of mail going through it? You're correct. I imagine there would have to be some sort of trust involved. Since SMTP passes on the Internet in cleartext, anybody could conceivably read it, similar to a postcard. I'm not sure there is a...
by Kiliman
Tue Sep 14, 2004 1:44 pm
Forum: MailEnable Professional Edition
Topic: Suggestion: Secondary MX network
Replies: 8
Views: 6580

Suggestion: Secondary MX network

Here's a suggestion. :idea: I think it would be great if some of us set up a secondary MX network for each other. I could write a web service that would allow you to synchronize user lists, spam rules, etc. This way both primary and secondary MX would be in sync, so spammers can't circumvent rules b...
by Kiliman
Tue Sep 14, 2004 1:32 pm
Forum: MailEnable Professional Edition
Topic: SPF in 1.5? Please!
Replies: 12
Views: 8362

Interesting anecdote about secondary MX with differing policies. http://archives.listbox.com/spf-discuss@v2.listbox.com/200407/0360.html More discussion on "exposing the fallacy that secondary MX servers are far more trouble and danger than many people seem to realize." http://archives.neohapsis.com...
by Kiliman
Thu Sep 02, 2004 4:45 pm
Forum: MailEnable Standard Edition
Topic: Outbound port mystery.....!
Replies: 5
Views: 4694

With any TCP connection, there's a source port and destination port. For SMTP connections, the destination port is 25. The source port is usually a random port. Your firewall rules should: * ALLOW inbound destination port 25, any source port * ALLOW outbound destination port 25, any source port * BL...
by Kiliman
Mon Aug 30, 2004 11:51 am
Forum: MailEnable Standard Edition
Topic: Getting MailEnable to refuse messages.
Replies: 8
Views: 12095

I created a replacement Address Map provider that does exactly this.

See my post http://forum.mailenable.com/viewtopic.php?p=18942

Kiliman
by Kiliman
Sun Aug 29, 2004 2:05 pm
Forum: MailEnable Professional Edition
Topic: Detected Viruses -- Why Two Attachments?
Replies: 6
Views: 5282

Actually, I created a script for McAfee that has the following features: 1) Better MIME support. This filter now handles embedded messages (content-type: message/rfc822) unlike the built-in virus filter. 2) Better performance. This filter calls the scanner one time for the entire message using wildc...
by Kiliman
Fri Aug 20, 2004 7:05 pm
Forum: MailEnable Standard Edition
Topic: Can i store *ALL* email
Replies: 2
Views: 2746

Actually, it's pretty trivial to copy all messages to a folder. Here is a simple Pickup Event batch file. @echo off rem only handle SMTP inbound messages if not "%2"=="SMTP" goto exit set _mepath=C:\Program Files\Mail Enable set _date=%DATE:~10%-%DATE:~4,2%-%DATE:~7,2% set _logpath=%_mepath%\Logging...