SM 13.2 Presenting Wrong Outbound IP

Problem reported by Scott Hendrickson - 4/17/2015 at 3:03 PM

Submitted

My server has 83 domains on it, one of which has around 300 users. I assigned this domain a different IP just in case any of its users' machines got infected and tried to send a bunch of spam. I assigned the appropriate ports to the IP, then the IP to the host name. I even remembered to go in and Edit the domain and change the Outbound IPv4 address on the Technical tab, but headers for email sent from this domain still show the same IP as the others, which is the main IP assigned to the NIC on the VPS. Not only has the SmarterMail service been restarted, but also the whole machine has been rebooted for Windows updates since these changes were made.

Any ideas as to what I may have done wrong, or if this is a bug in SmarterMail.

Thanks!

Scott Hendrickson
SOS4Net, Inc.
Centennial, CO. U.S.A.

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Employee Replied

4/17/2015 at 4:25 PM

Employee Post

Hello Scott,

Thanks for the details. Can you please confirm if you have the SMTP Out tab set to use the NIC card or the Specific IP on the domain ?

If you have continued difficulties please consider opening a Support Ticket so we can troubleshoot.

Thanks.

Scott Hendrickson Replied

4/17/2015 at 5:42 PM

Ah Ha, thanks, Joseph! Someplace I forgot to look. On the SMTP Out tab, it is set to use the one specific IP. I assume I'll need to change that to Use the Domain's IP. I checked a handful, and on the Domain Edit screen, Technical tab, they do all appear to be set to the main IP except for the one, which is what I want.

This does bring up another question however: Once I set it to use the Domain's IP on the SMTP Out tab, will SM still use the primary NIC IP as the default when new domains are created, or will I need to go in and select it manually?

Thanks again.

Scott

Scott Hendrickson
SOS4Net, Inc.
Centennial, CO. U.S.A.

Bruce Barnes Replied

4/17/2015 at 7:00 PM

My experience in creating new domains is that the primary IP address is always selected as the domain's IP address.

When creating domains, you should always select the proper IP address.

Additionally, if you have IPV6 IP addresses you are specifically using for domains, the IPV6 selection should be set to DISABLED on both the domain and the SMTP out.

If you have an IPV6 IP address enabled, and do not have at least one of your primary server's FQDNs reverse mapped to it, you could end up with non-delivery issues because of being perceived as sending spam.

Bruce Barnes

ChicagoNetTech Inc

brucecnt@comcast.net

Phonr: (773) 491-9019

Phone: (224) 444-0169

E-Mail and DNS Security Specialist

Network Security Specialist

Customer Service Portal: https://portal.chicagonettech.com

Website: https://www.ChicagoNetTech.com

Security Blog: http://networkbastion.blogspot.com/

Web and E-Mail Hosting, E-Mail Security and Consulting

Scott Hendrickson Replied

4/19/2015 at 4:37 PM

Hi Bruce!

Just to clarify, you mean if I have NO IPv6 addresses in use, I should set that to disabled on both the domain and the SMTP out, right?

Scott Hendrickson
SOS4Net, Inc.
Centennial, CO. U.S.A.

Bruce Barnes Replied

4/19/2015 at 7:21 PM

Yes, Scott. If you have nothing you need running on IPV6, then it should be disabled in all of your domains and in SMTP out.

If you, legitimately, have a domain running under IPV6, then you will need to map the correct IPV6 IP address to the domain, AND map SMTP OUT to use the DOMAIN'S IP ADDRESS.

As an FYI, you CAN have a domain mapped to both IPV4 and IPV6 IP addresses. You can also have a domain mapped only to an IPV6 IP address.

Bruce Barnes

ChicagoNetTech Inc

brucecnt@comcast.net

Phonr: (773) 491-9019

Phone: (224) 444-0169

E-Mail and DNS Security Specialist

Network Security Specialist

Customer Service Portal: https://portal.chicagonettech.com

Website: https://www.ChicagoNetTech.com

Security Blog: http://networkbastion.blogspot.com/

Web and E-Mail Hosting, E-Mail Security and Consulting

Curtis Kropar www.HawaiianHope.org Replied

7/6/2015 at 1:14 PM

Hi.

Sorry, I'm confused by this.

Also, We are using Version 14 now....

When you are looking at the domains and hit "edit" as the system admin account, the outbound IPV4 should be the internal IP address that the domain is assigned to ? Its the only option on ours, but i would have assumed that should have been the public IP address for the connection.

I am going through and making adjustments to our server and just realized that all of the backups we restored from the domain files have what appears to be external IP's in them from our old server.

Oh, and where is this "SMTP Out" tab ? Or was that version 13 and not 14 ?

www.HawaiianHope.org - Providing technology services to non profit organizations, homeless shelters, clean and sober houses and prisoner reentry programs. in 2018, in just one year, we gave away 1,000 Free Computers !

Linda Collins Replied

6/7/2016 at 10:22 AM

There is no IPv6 selection in the DOMAIN section in version 15. Maybe it is not there if you uncheck IPv6 in SMTP out?

Also, I am having an issue where email is being sent out via the local LAN port when I send local email instead of the WAN port as selected in SMTP out. This forces a mismatch on the HELO string IP and causes a spam flag.

Hasan Dilmac Replied

8/21/2016 at 12:15 PM

Hi Bruce,

> As an FYI, you CAN have a domain mapped to both IPV4 and IPV6 IP addresses. You can also have a domain mapped only to an IPV6 IP address.

I tried setting up IPv6 for domain, set IPv4 None, however it still send the server IP in the header. Have you tried this? working? Server has IPv4 and IPv6. Do i have to disable v4 in order to send v6 in the header?

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