Will SMTP & PoP3 live together? 1

[Zamuk]

1. I have an email domain coming straight to my SBS2k3 Exchange (abc.com)

2. 1. I have an ISP (Bellsouth.net) hosting PoP3 accounts. Users are currently going to IE7, logging on and working via browser.

3. I have created a POP3 connector on my Exchange box with the proper logon information. but I purposely have NOT done the passwords correctly until I have the following answered..... this is so I don't screw up the PoP3 accounts by downloading all the email to the users' Outlook on my network.

I need for the mail, that is entering via the PoP3 connector to go out as that same address. Meaning. user@pop3.net gets an email that the Exchange server pulled down via this connector. When that email is replied to it will contain the original "user@POP3.COM" email address...... and not get changed to my SMTP address.

I tried setting up the Outlook 2k3 clients with a direct PoP3 connection but it was a headache because users were getting confused on which "Account" to choose when they send out email (or replied to one).

so, is what I'm wanting to do considered "Spoofing"? which I know is a no-no. Or can SMTP and PoP3 work in harmony?

thank you,

Zam

 

[WhoKilledKenny]

Exchange was designed to support the following protocols, and yes you can use the same public IP as each protocol communicates over different ports:
Protocol - Default Port - Secure Port
POP3 110 995
IMAP4 143 993
HTTP 80 443
NNTP 119 563
SMTP 25

I don't know if there is a difference with Exchange running on SBS. From a High level, lookup creating Virtual Servers for hosting protocols in help.

 

[Zamuk]

Thanks who. I'll add the Secure Port settings to my Netopia router and see if this will make things work. I can email to everyone except one certain domain, which is Bellsouth.net.

Actually, I can create a new email and it goes out fine. I just can't "reply" to any emails with bellsouth.net name.

/shrug.

 

[58sniper]

You're going to have issues. If Exchange is responsible for grabbing mail for one domain via direct MX delivery, and for another domain via some crappy POP3 connector, the end result is that the email all resides in the same mailbox for the user.

That doesn't give the user the ability to choose which domain outbound mail is coming from. For example - a user receives an email via the POP3 connector, and replies to it. The reply will go out via the users' default SMTP address in Exchange. NOT THE ADDRESS THE ORIGINAL MESSAGE WENT TO.

Pat Richard, MCSE MCSA:Messaging CNA
Microsoft Exchange MVP
Want to know how email works? Read for yourself -

http://www.ietf.org/rfc/rfc2821.txt

 

[Zamuk]

You are correct, again, Pat. The users are getting both SMTP and PoP3 to the same mailbox. As of now, both SMTP and PoP3 is working great on the same server. However, the objective would be to have users repling to SMTP with that address. And if that same user replies to a PoP3 email, that address would be that of the PoP3 account.

OOOkay. Is there away to configure Exchange so that when a user gets mail from SMTP it will reply to that SMTP. AND, if the user receives a PoP3 email, and replies, it will go out with that very same PoP3 address?

I'm not afraid to read if this should be too cumbersome to reply. Just point me in the right direction for setup/configuration instructions, etc.

..... and THANK YOU!!!

 

[58sniper]

No.

The work around is configuring IMAP accounts in Outlook and then choosing the account on a per-message basis. But that's just full of problems.

Additionally, users can set the address they want replies going to, but that's a per-message issue as well.

Pat Richard, MCSE MCSA:Messaging CNA
Microsoft Exchange MVP
Want to know how email works? Read for yourself -

http://www.ietf.org/rfc/rfc2821.txt

 

[Zamuk]

Excellent. I know have a definitive answer and I will relate this to my boss in the morning. Have a super week and thanks for the help.

Zam