[OT] Re: Can source and IP in email header be spoofed and how to mitigate

2016-07-27 Thread David Benfell
On 07/27/2016 08:24 PM, Roger Goh wrote: > Our headquarter's email server auto-forward emails over to our > email server & I have a concern: > Can source (ie smtp.zzzbank.com.au & > srvm02.zzzbank.com.au below) > & the IP addresses be s

Can source and IP in email header be spoofed and how to mitigate

2016-07-27 Thread Roger Goh
Our headquarter's email server auto-forward emails over to our email server & I have a concern: Can source (ie smtp.zzzbank.com.au & srvm02.zzzbank.com.au below) & the IP addresses be spoofed? Received: from smtp.zzzbank.com.au (10.98.2.87) by ZZZWVEXC01ZZ.bbb.com.au (10.9.95.37) with z S

Re: OT: ISP just gave be 13 days to switch IPs

2016-07-27 Thread Robert Schetterer
Am 27.07.2016 um 17:01 schrieb Ben Greenfield: > I know this isn’t a specific postfix question but I’m hoping to get some good > advice from others who have been in this spot before. > > I just got noticed that my IP address of 14 years is being revoked in less > then 2 weeks. I can imagine the

Re: OT: ISP just gave be 13 days to switch IPs

2016-07-27 Thread Benny Pedersen
On 2016-07-27 17:07, Giles Coochey wrote: Perhaps switch to using your ISPs mail gateways to avoid this problem in the future. assume thay have one, its not so here in danmark, isps only allow own domains senders to relay sending email, it was before if a isp custommer have a ip in isp relay

Re: OT: ISP just gave be 13 days to switch IPs

2016-07-27 Thread Giles Coochey
On 27/07/16 16:01, Ben Greenfield wrote: I know this isn’t a specific postfix question but I’m hoping to get some good advice from others who have been in this spot before. I just got noticed that my IP address of 14 years is being revoked in less then 2 weeks. I can imagine the work I need

OT: ISP just gave be 13 days to switch IPs

2016-07-27 Thread Ben Greenfield
I know this isn’t a specific postfix question but I’m hoping to get some good advice from others who have been in this spot before. I just got noticed that my IP address of 14 years is being revoked in less then 2 weeks. I can imagine the work I need to do but I’m wondering what I’m not thinkin

Re: postfix sends but does not receive

2016-07-27 Thread Bob
On 2016-07-26 06:42 PM, /dev/rob0 wrote: BTW Bob, I answered your question on July 18 when you asked it the first time. http://marc.info/?l=postfix-users&m=146888588215649&w=2 I am sorry I missed your reply. Thank you for trying to help me. On Tue, Jul 26, 2016 at 07:28:13AM -0600, Bob wrot