Lee, Just want to make sure I understand your setup.
You have a "non-real" mail server behind your firewall. It has an non-routable address as it uses nat through the firewall to communicate with the world. You have a "real" mail server outside your firewall that has a routable address. Do you own the "real" mail server? Do you have the ability to change settings on this server? Does this server have 2 nics? (One for your private network and one for your public network) What email products (IE:Microsoft Exchange, Sendmail, etc.) and OS's are running on these servers? Is the reason you use two email servers is that you do not want to allow "relaying" on the "real" mail server? Do you allow "relaying" on the "non-real" mail server? Do you have a DNS server inside your firewall? Do you have a DNS server outside your firewall? Do you own this or have the ability to change settings? Assuming your "non-real" mail server does not have an extra nic and a routable address, does your nat translation provide a routable address to translate to the non-routable address for your "non-real" mail server? John: FYI, I have heard that MS's native SMTP server has problems and to avoid using it. Steve Fogelson Internet Commerce Solutions -----Original Message----- From: Lee Sobo [mailto:[EMAIL PROTECTED]] Sent: Friday, June 14, 2002 6:40 AM To: Multiple recipients of list witango-talk Subject: RE: Witango-Talk: SMTP Load In regard to mail issues, we have plenty. It seems that we have alot of problems sending mail also. What I have setup is a second mail server that is behind my firewall to send out mail only to avoid the smtp relay hassle. When I send out mail, it has a from address of [EMAIL PROTECTED] The ip address of the server sending the mail is not in my dns, but I have a real mail server that is. Also, the non-real mail server is behind the firewall and is using nat. My question is, will the ip address of the non-real mail server be switched by the nat device like regular ip traffic is? And if that is the case, what do I add to my a records and mx records? >>> [EMAIL PROTECTED] 06/13/02 10:34AM >>> John, Your server should be able to handle that many messages in under 5 minutes. Some mail servers do reverse DNS lookups and other verification to verify your mail servers identity. Make sure you have everything in your DSN for that mail server just as if it were a mail server receiving mail. Make sure your domain has an MX record, make sure yourdomain.com has an A record, and the ip address on your server has a reverse dns entry. When my reverse dns entries were not set up correctly, I had trouble sending e-mail to AOL. Troy Sosamon ===== Original Message from [EMAIL PROTECTED] at 6/13/02 11:08 am >Hello all, > >We have been using the SMTP service that comes with IIS on a Win2k server to >send mail from the Witango server. I'm guessing the server might be >averaging 100 messages per day, no more than 200. If you count the number >of recipients per message, we might be looking at 500 recipients. > >It has been failing to send messages to some domains. We had a Microsoft >"expert" come in and he told us that the SMTP service can't handle the load. > >Does this make sense? > >Thanks, > >John Shaw > >________________________________________________________________________ >TO UNSUBSCRIBE: send a plain text/US ASCII email to [EMAIL PROTECTED] > with unsubscribe witango-talk in the message body ________________________________________________________________________ TO UNSUBSCRIBE: send a plain text/US ASCII email to [EMAIL PROTECTED] with unsubscribe witango-talk in the message body ________________________________________________________________________ TO UNSUBSCRIBE: send a plain text/US ASCII email to [EMAIL PROTECTED] with unsubscribe witango-talk in the message body ________________________________________________________________________ TO UNSUBSCRIBE: send a plain text/US ASCII email to [EMAIL PROTECTED] with unsubscribe witango-talk in the message body
