[mailop] Bitninja

for services to help keep our IPs clean. It seems completely untrustworthy, but maybe I'm wrong? Is there any legitimacy to bitninja? Thanks, Alex -- Alexander Burch ActiveCampaign / Deliverability Engineer abu...@activecampaign.com 1 North Dearborn St Suite 500, Chicago IL, 60602 <ht

[mailop] Microsoft 2.6.0 ... 2.1.5

livery -> *250 2.1.5* It begins with 250 2.6.0 and ends with 250 2.1.5. Why are there 2 status codes? Does the second one provide additional context, maybe something like "not blackholed"? Or is it just repetitive and therefore insignificant? Thanks, Alex -- Alexander B

[mailop] How to say "bounced" in German

What would be an appropriate translation of "bounced" in German? The current options I have heard are: “Kahm zurück” “Kam zurück” “Rückläufer” Thanks, Alex -- Alexander Burch ActiveCampaign / Deliverability Engineer abu...@activecampaign.com 1 North Dearborn St Suite 500, Chicago

Re: [mailop] Yahoo throttling 421 4.7.0 [TSS0...

may vary of course, but if what you’re seeing is related > to what we were seeing reaching out to Yahoo is the best bet. > > Thanks, > Matt Gilbert > -- > Deliverability Engineer | MailChimp > delivery.mailchimp.com > > > On Aug 10, 2018, at 4:12 PM, Alexander Burc

[mailop] Yahoo throttling 421 4.7.0 [TSS0...

s at Yahoo, but they certainly don't last for 4 hours. Should that be taken literally? If we see that error should we backoff sending on that IP for 4 hours? That seems a bit extreme. Can anyone offer perspective on the backoff intervals they use here? Thanks, Alex -- Alexander Burch Acti

[mailop] AWS bring your own IP

e too, but I doubt many > senders would use it if it was the case. > > > > Note: I don't know much about AWS in general; also, we have our own ASN > and we're LIR, that might not be the case for all ESPs. > > -- > > *Benjamin * > > > > *From:* mailop *On Beh

[mailop] AWS bring your own IP

t negative effects anyone anticipates of using AWS + private IPs for their mail infrastructure. Thanks, Alex -- Alexander Burch ActiveCampaign / Deliverability Lead abu...@activecampaign.com 1 North Dearborn Street, Suite 500, Chicago, IL 60602 <https://www.facebook.com/activeca

Re: [mailop] Reg. Delay in delivery at Gmail MX

Yes I also just noticed this "MessageRouterUpload' error for the first time about 1-2 weeks ago. However, it hasn't slowed anything down for us. Our delivery times to Gmail have not been affected. Thanks, Alex -- Alexander Burch ActiveCampaign / Deliverability Lead abu...@activecampaign.

[mailop] Recent "banned sending IP" errors when sending to Microsoft

wondering is, if Microsoft merged Outlook an Office365 infra, what are we still seeing specific blocks specific to Office365? There is clearly a different Office365 anti-spam system running independently of Outlook to some extent. Thanks, Alex -- Alexander Burch ActiveCampaign / Deliverability Lead abu

[mailop] Anyone from Port 25 here?

If you are paying for support you can email them at supp...@port25.com. They are usually really quick to respond. Thanks, Alex Alex Burch ActiveCampaign / Deliverability Lead (800) 357-0402 abu...@activecampaign.com 1 N. Dearborn St., Chicago , Il 60602, United States

[mailop] Email issues to outlook.com and hotmail.com this afternoon/evening

I've seen this too. Started earlier this week (Feb 19th). A big uptick in the number of "4.7.500 Server busy. Please try again later..." responses from Hotmail. I was assuming they were reputation related (spike in complaints and/or sending volume maybe). But they seem to be especially aggressive

Re: [mailop] Yahoo Mail Servers having new issues?

Oh jeez, you are right. Donk! Thank you Thanks, Alex Alex Burch ActiveCampaign / Deliverability Lead (800) 357-0402 abu...@activecampaign.com 1 N. Dearborn St., Chicago , Il 60602, United States

[mailop] Yahoo Mail Servers having new issues?

This is an old thread but seems to be an ever present issue, at least for us. Essentially, Yahoo just quits the connection after EHLO. This happens very often on certain IPs. The basic dialogue is below. Has anyone ever determined why Yahoo does this? Is it a reputation issue? Opening too many

[mailop] increase in deferrals/throttles at icloud/me/mac

Has anyone else seen a big increase in the time it's taking to delivery to icloud/me/mac addresses? I'm not seeing a ton of irregular bounces, I'm just seeing that the SMTP handshake is taking quite a while. And I'm seeing this with many different IPs. I'm wondering if they are making some

[mailop] 5.7.1 bounce codes

5.7.1 codes are used exclusively for policy blocks (IP blacklisted, content deemed spammy etc). Gmail uses it for DMARC rejections. Hotmail also uses 5.7.1 when an IP is outright blocked. This type of bounce confuses me a little. It certainly shouldn't be used to mark the recipient as invalid,

[mailop] Certified Senders Alliance

What is the general opinion of the Certified Senders Alliance? Does anyone find it impactful for delivery? They offered to let us join without any vetting, just sent us a bill for $___ without any questions. If there is no vetting process I have a hard time seeing how it would validate any sender

[mailop] Symantec blocking list issue

Did you ever make any progress with this? We've had a lot of problems with KPN/planet/hetnet recently and when we go to Symantec and look up our IP it says, "not listed" Thanks, Alex Alex Burch ActiveCampaign / Deliverability Lead (800) 357-0402 abu...@activecampaign.com 1 N. Dearborn St.,

[mailop] Proofpoint contact?

Does anyone here have a contact at Proofpoint? Their sales team is sending spam with a purchased list. I think that, as an anti-abuse company, they should be aware of this so that those responsible can be corrected. And, when we deny service to them for using a purchased list, they should be

[mailop] Issue with Gmail Delivery

I can see someone reporting this same problem in the emailgeeks slack channel: keith kouzmanoff [11:01 AM] gmail is now giving back failure notifications for valid email addresses - oh great, thanks gmail. akshay_redac...@gmail.com,gmail-smtp-in.l.google.com *(10.10.10.1), smtp; 550 5.1.1 The

[mailop] unique/shared public DKIM keys per domain?

Do major ISP check the public DKIM key for reputation metrics? For example, an ESP might use domain1.com, domain2.com and domain3.com to sign messages for different reputation pools. If these domains all have the same public DKIM key will this "blend" their reputations in any way, namely at

[mailop] Yahoo Errors

We are seeing this too, on a whole slew of IPs. We are getting "451 4.3.2 Internal error reading data" I'm guessing it's going to just clear itself up after a few hours/overnight. Anyone know why this happens? Seems to pop up here and there every so often, but I don't think it's reputation based.

[mailop] mailop] Hotmail is blocking our mail relay IP range

We have seen similar blocks recently pop up at Hotmail in the past few days on dedicated IPs of very legitimate senders whose lists are sparkling opt in. Hotmail accused these senders of Namespace mining, which might be the same category as what you are seeing as "harvesting". This just isn't

Re: [mailop] Hotmail "Organization queue quota exceeded."

We are seeing this too. It seems specific to the new Hotmail/Outlook MX records (versus the old hotmail.com mx's). With domains like hotmail.co.uk that only have the new MX records it's unavoidable. Our connections limits are extremely conservative, so I'm not sure why this is happening. Anyone

Re: [mailop] mailop Digest, Vol 119, Issue 5

...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Can you detail what you expect from PowerMTA? > And what made you be affected by the change of MX for .co.uk vs. all > others? > > Even if you have something like in your conf, it > won't create ju

Re: [mailop] mailop Digest, Vol 119, Issue 2

lop.org > > You can reach the person managing the list at > mailop-ow...@mailop.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of mailop digest..." > > > Today's Topics: > > 1. hotmail.co.uk

[mailop] hotmail.co.uk bouncing entire IP range with "mailbox unavailable"

Anyone else seeing issue with hotmail.co.uk bouncing messages with this code: "550 Requested action not taken: mailbox unavailable," That's usually reserved for invalid email addresses, but they are bouncing 100% of the messages we send them on on of our IP ranges with that code. Just started

[mailop] AOL whitelists

I wanted to reach out and see what other people have to say about AOL whitelisting on this thread. It seems AOL's approval process/standards for approval are fairly erratic. They often decline whitelisting requests for IPs that have really excellent reputations. I honestly could not find any