gmane.mail.list-managers

Re: blocklist problem

Joey Kelly — 2010-06-10T14:20:40

The ISPs are throttling me, but barracuda users are outright blocking me.


Ahh... that's what I was looking for... some way to throttle SMTP. Thanks.


I was planning on setting up SPF, but the more the merrier.

Re: blocklist problem

Vick Khera — 2010-06-10T13:56:52


Are they rejecting your mail or just throttling you?

If this is a new IP address from which you're sending, they need to first build up some reputation of whether those mails are wanted by their customers.   Over time, the mail will go through.  What you may have to do is configure postfix to trickle the mail out to these places, say by limiting it to 1 concurrent connection per destination domain.

You do this by setting a transport map to map "yahoo.com" to the transport "trickle".  Then in master.cf you create a copy of the "smtp" line and change "smtp" to "trickle", and then in main.cf you set "trickle_destination_concurrency_limit = 1".  The postfix list will provide more help if you need it.

Once yahoo/aol/gmail/hotmail get used to your IP, you can bump up the concurrency until ultimately you don't need the throttle anymore.

That and using DKIM is a great idea.  Just be sure to strip any DKIM on the incoming messages first so as not to confuse the remote verifiers.

Your other option is to use a l

Re: blocklist problem

Bob — 2010-06-09T23:40:50

I don't think that this is a majordomo thing. Blacklisting usually
consists of the ip that is distributing the mails. I have been using
majordomo since the 90's and have never been blacklisted by anyone
including the 3 isp's you mentioned below. Actually a high volume of my
list is consists of aol, yahoo, hotmail, gmail, etc. I also noticed that
when I installed dkim milter that the few problems I did have went away.
Alot of these places you may be talking of may be assuming its spam. Even
if what I speak is not the case, try dkim milter and/or domainkeys. Its
all free and does help with the spam senario.

Bob


On Wed, 9 Jun 2010, Joey Kelly wrote:

blocklist problem

Joey Kelly — 2010-06-09T22:38:49

Hi.

I have a large announcement list (over 15k subscribers) that I'm trying to 
migrate to Majordomo, and I'm getting blacklisted by several large ISPs:

Yahoo: 3066 addresses
AOL: 2346 addresses
Hostmail: 1374 addresses

...et cetera.

I get several errors, but the most obvious one is that I'm sending to too many 
recipients at one time.

mailq (postfix) tells me that I have about 8k outbound recipients sitting in 
my queue, every time I try to send to the list. Begging to get off the 
various blacklists only gets me blacklisted again as soon at the postfix 
tries to flush the queue.

Suggestions?