Re: [mailop] Gmail forwarding blowback

Never good enough (on the spam filters) but great suggestion. The user has disabled forwarding and is using POP3 to pull mail into Gmail. Thanks all for the help! -Warren On 11/09/2017 4:35 pm, Dave Warren wrote: > On 2017-11-08 12:20, Warren Volz wrote: > >> All, >> >> One of my users

Re: [mailop] Gmail forwarding blowback

On 2017-11-08 12:20, Warren Volz wrote: All, One of my users has their account setup to forward mail to Gmail. Recently I've started to see lots of rejects that look like the following: (expanded from ): host

Re: [mailop] Gmail forwarding blowback

On Wed, Nov 8, 2017, 1:29 PM Charles McKean wrote: > > 2017-11-08 21:46 GMT+02:00 Brandon Long via mailop : > >> GSuite users can also denote a host as an inbound gateway to get around > this problem, but I was never able to get the resources to

Re: [mailop] Gmail forwarding blowback

> 2017-11-08 21:46 GMT+02:00 Brandon Long via mailop : >> GSuite users can also denote a host as an inbound gateway to get around this >> problem, but I was never able to get the resources to have gmail users have >> the same ability. It's possible this is something we could

Re: [mailop] Gmail forwarding blowback

Address space for IPv6 is so huge, that it's almost impossible to keep IPv6 reputation data, and sender authentication is usually required. for IPv6 host Under normal conditions, SPF and DKIM are used to authenticate sender, but if you forward messages without address rewrite, all forwarded

Re: [mailop] Gmail forwarding blowback

I designed a similar system to what Andris Reinman mentioned for our outbound mail system which hosts about 80k email accounts. This is a 4 tier system; low spam probability, medium spam probability, high spam probability, blatant spam. After the message is scored we use postfix header routing to

Re: [mailop] Gmail forwarding blowback

We at Zone.ee handle redirects to Gmail (or to any target actually) in 3 steps: 1. If the message does not get any spam points (we use Rspamd) then we forward the message through our normal redirect IP range (3 IPs that equally share the messages) 2. If the message gets spam points but not enough

Re: [mailop] Gmail forwarding blowback

In article <0c09bad3-14bc-cd51-9bc8-25a205273...@lscg.ucsb.edu> you write: >I wonder if it would ever work to allow a server to forward a message >while including headers that indicate the message had signs of spam. It >would only work in the negative direction (this message is spam, but not

Re: [mailop] Gmail forwarding blowback

On Wed, 08 Nov 2017 11:42:41 -0800, Michael Peddemors said: > Besides, you want to keep the customer, not make him a gmail customer ;) If the mail service is bundled with something else that's a profit center, unbundling the cost center part and handing that to Google will improve your bottom

Re: [mailop] Gmail forwarding blowback

I wonder if it would ever work to allow a server to forward a message while including headers that indicate the message had signs of spam. It would only work in the negative direction (this message is spam, but not this message is ham). I kind of think of in the way the courts do with

Re: [mailop] Gmail forwarding blowback

...@mailop.org] On Behalf Of Michael Peddemors Sent: Wednesday, November 08, 2017 1:43 PM To: mailop@mailop.org Subject: Re: [mailop] Gmail forwarding blowback Do what we do, if you mark a message as 'Spam' deliver it to a 'local' IMAP folder called spam, and only forward the non-spam emails

Re: [mailop] Gmail forwarding blowback

Ah thats a good idea. My issue is more with the messages that Google mis-categorizes as spam but the local catch would fix that. And you are right, I need to disable the forward to others option... -Warren On 11/08/2017 12:42 pm, Michael Peddemors wrote: > Do what we do, if you mark a

Re: [mailop] Gmail forwarding blowback

Yes, forwarding spam to us is generally a really poor idea, especially over ipv6 [image: ]. The 18 is more of a source code, ie the source of the rejection, not really a specific error code. They're not generally useful to end users. We've discussed before that one thing that may work best is

Re: [mailop] Gmail forwarding blowback

Do what we do, if you mark a message as 'Spam' deliver it to a 'local' IMAP folder called spam, and only forward the non-spam emails. If they want to see it, they can log into your server to check that account.. (and don't let them turn spam protection off) But really, you should 'stop

Re: [mailop] Gmail forwarding blowback

On 11/08/2017 12:35 pm, Alan Hodgson wrote: > IMO, you really can't forward mail to Gmail; they will block you if you > forward any spam at all. > > Gmail accounts can be setup to pull mail in via POP-3, that's a far better > way for them to get their mail. It's not my preference for sure.

Re: [mailop] Gmail forwarding blowback

This is to be expected if you let your users forward spam. Some systems may be able to automatically notice, but. Aloha, Michael. -- Michael J Wise Microsoft Corporation| Spam Analysis "Your Spam Specimen Has Been Processed." Got the Junk Mail Reporting

Re: [mailop] Gmail forwarding blowback

On Wed, 2017-11-08 at 12:20 -0700, Warren Volz wrote: > All, > > One of my users has their account setup to forward mail to Gmail. > Recently I've started to see lots of rejects that look like the > following: > > (expanded from ): host >