Re: Emails using Gateway IP in header instead of router IP number

"Sam" <Sam@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:FB49CC90-B09C-4485-B325-A3E2C97DBD10@xxxxxxxxxxxxxxxx
I'm running SBS 2003, emails sent to comcast are being rejected.

After investigating and talking to comcast, they said that the email
header
sent from server is using the gateway IP number instead of my firewall IP
number.

I have the reverse DNS and mx pointing to the firewall IP number (not the
gateway)

I checked other servers I support with the same sonicwall firewall setup
and
the email headers are using the sonicwall static IP as they should.

We are using qwest for ISP provider.

I'm suspecting that the dsl modem is the cause of this problem!

Any ideas?

Sam


I'm not sure I follow what the 'gateway' IP is. Do have multiple static
external WAN IPs, eg, .1 thru .5, and the MX record is say .2, but the
emails are being sent over .1?

If that's the case, you can add a public record for that other IP, and add
it to your SPF record, or create an SPF, if not already done so, with the
two records.

Or is it possibly the DSL modem is routing instead of being in bridge mode?

--
Ace

This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.

Please reply back to the newsgroup or forum for collaboration benefit among
responding engineers, and to help others benefit from your resolution.

Ace Fekay, MCT, MCTS Exchange, MCSE, MCSA 2003 & 2000, MCSA Messaging
Microsoft Certified Trainer

For urgent issues, please contact Microsoft PSS directly. Please check
http://support.microsoft.com for regional support phone numbers.


.

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