[Declude.JunkMail] Smarthost/Gateway...
I mentioned a few weeks ago that our netblock has been listed on SPEWS because our ISP is Spam Friendly. Anyway... I was going to setup a Smarthost/SMTP gateway on a different network but wanted to know what impact Junkmail might have on that. With regard to Rev DNS records and MX Records, do I need to make sure they match my 'forwarding' mail system or doesn't that matter. IOW, if the email from the 'forwarding' email server is stamped @acme.com and the 'forwarder' SMTP server has REVDNS and MX entries from @domain.com where there be a problem? Basically, I was going to enable relaying from my source IP only. --- [This E-mail scanned for viruses by F-Proto Virus Scanner] --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type unsubscribe Declude.JunkMail. The archives can be found at http://www.mail-archive.com.
Re: [Declude.JunkMail] Smarthost/Gateway...
I mentioned a few weeks ago that our netblock has been listed on SPEWS because our ISP is Spam Friendly. Anyway... I was going to setup a Smarthost/SMTP gateway on a different network but wanted to know what impact Junkmail might have on that. Assuming that Declude JunkMail is running on the existing IMail server (and not the Smarthost), there isn't anything special you would need to do. If you were adding a gateway for incoming mail, you would need to let Declude JunkMail know about the gateway (using an IPBYPASS line), as it would alter the IP address that connects to IMail. But for outgoing mail, you don't have to do anything for Declude JunkMail. With regard to Rev DNS records and MX Records, do I need to make sure they match my 'forwarding' mail system or doesn't that matter. IOW, if the email from the 'forwarding' email server is stamped @acme.com and the 'forwarder' SMTP server has REVDNS and MX entries from @domain.com where there be a problem? That's not a problem. Although some mailservers will check your reverse DNS entry, about 90% will just verify that it exists, with the other 10% making sure that it is a valid hostname. But only about 1 in 1,000 will actually make any attempt to determine whether the reverse DNS entry matches anything (since it's not possible to do that accurately). -Scott --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type unsubscribe Declude.JunkMail. The archives can be found at http://www.mail-archive.com.
RE: [Declude.JunkMail] Smarthost/Gateway...
Assuming that Declude JunkMail is running on the existing IMail server (and not the Smarthost), there isn't anything special you would need to do. The way we're currently configured, we have Junkmail running on iMail just as an inbound filter. All inbound SMTP traffic hits iMail/Junkmail and is then forwarded to our Exchange server. All outbound SMTP traffic (from Exchange) is sent directly from Exchange to the host and that's where SPEWS is hitting is. I'd like to forward all outbound SMTP traffic from Exchange back to iMail and then have iMail act as the SmartHost. Thanks! -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of R. Scott Perry Sent: Monday, September 30, 2002 8:48 AM To: [EMAIL PROTECTED] Subject: Re: [Declude.JunkMail] Smarthost/Gateway... I mentioned a few weeks ago that our netblock has been listed on SPEWS because our ISP is Spam Friendly. Anyway... I was going to setup a Smarthost/SMTP gateway on a different network but wanted to know what impact Junkmail might have on that. Assuming that Declude JunkMail is running on the existing IMail server (and not the Smarthost), there isn't anything special you would need to do. If you were adding a gateway for incoming mail, you would need to let Declude JunkMail know about the gateway (using an IPBYPASS line), as it would alter the IP address that connects to IMail. But for outgoing mail, you don't have to do anything for Declude JunkMail. With regard to Rev DNS records and MX Records, do I need to make sure they match my 'forwarding' mail system or doesn't that matter. IOW, if the email from the 'forwarding' email server is stamped @acme.com and the 'forwarder' SMTP server has REVDNS and MX entries from @domain.com where there be a problem? That's not a problem. Although some mailservers will check your reverse DNS entry, about 90% will just verify that it exists, with the other 10% making sure that it is a valid hostname. But only about 1 in 1,000 will actually make any attempt to determine whether the reverse DNS entry matches anything (since it's not possible to do that accurately). -Scott --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type unsubscribe Declude.JunkMail. The archives can be found at http://www.mail-archive.com. --- [This E-mail scanned for viruses by F-Proto Virus Scanner] --- [This E-mail scanned for viruses by F-Proto Virus Scanner] --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type unsubscribe Declude.JunkMail. The archives can be found at http://www.mail-archive.com.
RE: [Declude.JunkMail] Smarthost/Gateway...
Assuming that Declude JunkMail is running on the existing IMail server (and not the Smarthost), there isn't anything special you would need to do. I'd like to forward all outbound SMTP traffic from Exchange back to iMail and then have iMail act as the SmartHost. In that case, you would need to make sure that the Exchange server has a reverse DNS entry (it doesn't matter what the reverse DNS entry is), and that it is sending proper HELO text (host.example.com, not just host or 192.168.100.112). If there *is* a problem, you could always change the actions for outgoing E-mail in the global.cfg file. -Scott --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type unsubscribe Declude.JunkMail. The archives can be found at http://www.mail-archive.com.
