Spam Problem - SMTP Authentication?

Hello there; I’m new with lotus domino, and i discovered that all spam on accounts come from internal accounts. Then, i test a telnet lotusserver 25 and i check that i can put commands (like email from, rcpt to…) without any authentication. How can i solve this? what is the “correct configuraction” in order to avoid this spam type?.

In adition, i tried to configure the account by pop3 client, but i only can check the mails. When i try to send to external account (gmail, yahoo, etc) i get the error “rejected by policy reasons”? what policies?? where? i don’t found it.

Any suggestion? documents? it would be appreciated.

Best Regards

Subject: Spam Problem - SMTP Authentication?

in adition… this is the port config

Mail Mail

(IMAP)	Mail

	(POP)	Mail

		(SMTP Inbound)	Mail

			(SMTP Outbound)

TCP/IP port number: 143 110 31436 25

TCP/IP port status: Enabled Enabled Enabled Enabled

Enforce server access settings: No No No N/A

Authentication options:

Name & password: Yes Yes No N/A

Anonymous: N/A N/A Yes N/A

SSL port number: 993 995 465 465

SSL port status: Disabled Enabled Disabled Disabled

Authentication options:

Client certificate: No No N/A N/A

Name & password: Yes Yes Yes N/A

Anonymous: N/A N/A No N/A

it’s ok? suggestions?. Why SMTP inbound and outbound are different?.. inbound is 31436…?? i can’t understand inbound and outbound concept… smtp are a protocol… right?

Subject: RE: Spam Problem - SMTP Authentication?

also… the firewall config says… port 25 open… what about the other one?

Subject: Spam Problem - SMTP Authentication?

Here is a resource that will help you:

http://chris-linfoot.net/d6plinks/CWLT-6YVJEL

In particular, look at this document:

http://chris-linfoot.net/d6plinks/CWLT-6R8P9S

Subject: Spam Problem - SMTP Authentication?

On the first point you need to check/configure the SMTP Inbound Controls in the configuration settings for the server.

It’s under the Router/SMTP - Restrictions and Controls - SMTP Inbound Controls tab in the configuration settings.

On the second point, Domino performs anti-relay by default when you set up a server. If you need to adjust this, the place where you can do this is in the ‘Inbound Relay Enforcement’ in the configuration settings mentioned above.

Hope this helps.

Subject: RE: Spam Problem - SMTP Authentication?

Thanks for the replies… =)i’m going to make some test to improve the behavior.