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Typical Relay Issue

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propercc View Drop Down
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    Posted: 20 August 2006 at 4:09pm

sf ver: v2.7.1.532 listening on 25 - ip: xx.xx.32.31
mail server: mailenable listening on 26 - ip: xx.xx.32.31 (same server)
54 domains all added to "Local Domains"

customer sends mail from outlook client using smtp auth with their domain. They cannot send email to local or external domains. It seems to be blocking the mail because the IP their ISP is giving them is blacklisted. Why is this happening? How can I prevent it?

08/20/06 14:12:16:406 -- (1136) Connection from: xx.xx.116.202  -  Originating country : United States
08/20/06 14:12:16:828 -- (1136) Resolving xx.xxx.116.202 - cpe-xx-xxx-116-202.xxx.xx.rr.com
08/20/06 14:12:16:828 -- (1136) - SPF analysis for sender@sendersdomain.com done: - none
08/20/06 14:12:16:828 -- (1136) Mail from: sender@sendersdomain.com
08/20/06 14:12:17:078 -- (1136) - MAPS search done... 521 The IP xx.xxx.116.202 is Blacklisted by dnsbl.sorbs.net. Dynamic IP Addresses See: http://www.sorbs.net/lookup.shtml?xx.xxx.116.202
08/20/06 14:12:17:093 -- (1136) xx.xxx.116.202 - Mail from: sender@sendersdomain.com To: recipient@recipientdomain.com will be rejected
08/20/06 14:12:17:359 -- (1136) EMail from sender@sendersdomain.com to recipient@recipientdomain.com was received and quarantined. Size: 5 KB, 5120 bytes
08/20/06 14:12:17:421 -- (4052) Time to add Msg to Bayes corpus:0
08/20/06 14:12:17:437 -- (1136) Blacklist cache - Updated limbo counter for 72.228.116.202
08/20/06 14:12:17:437 -- (1136) Disconnect

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propercc View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote propercc Quote  Post ReplyReply Direct Link To This Post Posted: 20 August 2006 at 4:12pm

note:

sendersdomain.com & recipientdomain.com are both LOCAL domains on the server and are both in the "local domains" list.

if sender@sendersdomain.com sends email to a gmail account the same happens as well...

this was to clarify my rambling...

-c

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LogSat View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LogSat Quote  Post ReplyReply Direct Link To This Post Posted: 20 August 2006 at 4:39pm
SpamFilter by default denies any attempt to relay emails to domains that are not in its list of "Local Domains".

Prior to v3.1, the only way to allow users to use SpamFilter as their "outgoing smtp server" is to add the IP(s) of the users in an IP whitelist. This will allow users to send emails to any domain, and to avoid being blocked. In your example, SORBS correctly blocked the user as SORBS blocks any dynamic IP. Please note that even if the client has smtp auth enabled, it's not supported in your version of SpamFilter.

Starting with SpamFilter 3.1, we added support for SMTP auth (including SSL encryption). Active Directory, LDAP, and Unix-style passwords can be used to authenticate senders. If a sender is authenticated successfully, they will be whitelisted and allowed to relay.


Roberto Franceschetti

LogSat Software

Spam Filter ISP
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Post Options Post Options   Thanks (0) Thanks(0)   Quote propercc Quote  Post ReplyReply Direct Link To This Post Posted: 20 August 2006 at 4:51pm

What if I were to do the following:

Give SF a ip different from my mailserver, just say xx.xx.47.53 and have it listen on 25.

Set my mail server (xx.xx.32.31) back to listen on 25.

change the following dns entries:

create an A record for spam.domain.com and point it to xx.xx.47.53
change my MX record to point to spam.domain.com
and leave my mail.domain.com to point to my mailserver (xx.xx.32.31)

wouldent this work?

Dont get me wrong if this software works good for me I'll buy your new version.

-C

http://www.propercc.com
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LogSat View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LogSat Quote  Post ReplyReply Direct Link To This Post Posted: 20 August 2006 at 4:59pm
Yes, the configuration you described will work just fine!
As a side note, while we do not have the latest version available as a "free" test download, if you wish to try it please contact us at sales at logsat dot com, we'll be able to help.
Roberto Franceschetti

LogSat Software

Spam Filter ISP
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tcrawford Quote  Post ReplyReply Direct Link To This Post Posted: 21 August 2006 at 4:25pm

Originally posted by LogSat LogSat wrote:

SpamFilter by default denies any attempt to relay emails to domains that are not in its list of "Local Domains".

Prior to v3.1, the only way to allow users to use SpamFilter as their "outgoing smtp server" is to add the IP(s) of the users in an IP whitelist. This will allow users to send emails to any domain, and to avoid being blocked. In your example, SORBS correctly blocked the user as SORBS blocks any dynamic IP. Please note that even if the client has smtp auth enabled, it's not supported in your version of SpamFilter.

Starting with SpamFilter 3.1, we added support for SMTP auth (including SSL encryption). Active Directory, LDAP, and Unix-style passwords can be used to authenticate senders. If a sender is authenticated successfully, they will be whitelisted and allowed to relay.


 

Not to highjack the thread, but this software is worth its weight in gold, works GREAT!!!!!

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