Re: Eliminating backscatter

2017-11-03 Thread Dirk Stöcker
Hello, IF SMTP error code = 5.7.1 AND remote server = GMail DON’T generate a bounce message (my server) ELSE Generate bounce messages (my server) I use following approach for this problem, which not only affects GMail, but also T-Online and any other service

Re: Eliminating backscatter

2017-11-01 Thread Matus UHLAR - fantomas
On 31.10.17 18:38, J Doe wrote: Because my server is configured to perform virtual domain hosting, I have the following: /etc/postfix/main.cf mydestination = localhost ...but if a message is sent to a non-existent domain that I *virtually host* for: you apparently mean, non-existent

Re: Eliminating backscatter

2017-10-31 Thread J Doe
Hi Noel, >> On Oct 30, 2017, at 6:42 PM, Noel Jones wrote: >> >> On 10/30/2017 5:07 PM, J Doe wrote: >> >> How do I stop backscatter generated from my server in response to the >> bounces from Gmail ? > > This is a very difficult problem to solve. Your choices are a)

Re: Eliminating backscatter

2017-10-30 Thread Noel Jones
On 10/30/2017 5:07 PM, J Doe wrote: > > How do I stop backscatter generated from my server in response to the bounces > from Gmail ? > This is a very difficult problem to solve. Your choices are a) don't accept spam, or b) don't forward to gmail. There may be information on the web about

Re: Eliminating backscatter

2017-10-30 Thread J Doe
Hi Noel, > On Oct 30, 2017, at 4:07 PM, Noel Jones wrote: > >> On 10/30/2017 2:52 PM, J Doe wrote: >> Hi, >> >> One of my mail servers (Postfix 3.1.0), is configured to perform virtual >> domain hosting. It forwards mail to the virtual domain to mailboxes of >> users

Re: Eliminating backscatter

2017-10-30 Thread Noel Jones
On 10/30/2017 2:52 PM, J Doe wrote: > Hi, > > One of my mail servers (Postfix 3.1.0), is configured to perform virtual > domain hosting. It forwards mail to the virtual domain to mailboxes of users > on Gmail. > > I can see in my mail log that spam with forged origin addresses sometimes >

Eliminating backscatter

2017-10-30 Thread J Doe
Hi, One of my mail servers (Postfix 3.1.0), is configured to perform virtual domain hosting. It forwards mail to the virtual domain to mailboxes of users on Gmail. I can see in my mail log that spam with forged origin addresses sometimes comes into my server that is addressed to virtual