I'm aware this may not be the right place to ask this, but I don't know where else and others may encounter the same issue.
I'd like to have an aggregated view (or an alert) when some recipients in my contact list don't receive any of the emails my app sents. Is this possible?
I checked on the alert thing in the docs but it doesn't seem to do what I need. Although this seems like a pretty common need and there may not be necessary to setup webhooks and own app logic to handle this, wouldn't it?
Thanks
I have also faced same issue with cPanel and many other providers like Mailchimp. This usually happens due to Empty Subject due to which Cross-Server Contacts may not happen. Also, if you are using PHPmail() or sendmail function instead of SMTP, You need to be using TLS1.2 or TLS1.3 though 1.0 is also supported but many of my E-mails were not delivered so I upgraded to TLS 1.3 . Also, Check if your mail goes to Spam Folder. In that case, increase your Website and Domain Score and Try to rank in Google Safe Browsing. Also, this also happens due to misleading Hosting Provider whose SMTP servers are not setup correctly or Provider send many spam messages due to which, you domain score may got low. I currently use interserver_smtp and cloudmate_smtp collectively for all my clients as interserver deliverablility in India is low and cloudmate works in both texas and india correctly. Try cPanel or Plesk as it has the best deliverability. One More thing, This could also be an issue of DNS. Check your DNS settings if MX records are pointed to MailJet Servers.
Related
The project I'm working on is a newsletter builder, and I'm on its final steps. Now I need to verify spf dkim and dmark (which I don't know what they mean or how they work). Then I also need to check if my email is considered as spam or if any of the news contains spam (separately). I tried to read the documentation of 2 great spamcheckers (spamassassin and rspamd) and I couldn't understand anything about how they are supposed to be integrated on my project. I think all my problems are due to my lack of knowledge related to emails/email servers and stuff related. I'd really appreciate if someone could enlight me about what are the steps that I need to do, if I really need to setup an email server to test this out and how to do it etc. etc. I'm really in the dark here. I know the enterprise I'm doing this work for already was sending emails from their domain but I don't think they gave me access to that.
The following link may be useful to you, it's a document of iRedMail (an open source mail server solution):
https://docs.iredmail.org/setup.dns.html
You don't need to know what iRedMail is, just check the introduction of each dns record.
For me, these introductions are enough, if you want a more detailed introduction, wikipedia and official website may be more useful
For checking spam status and dns records such as spf, dkim, etc., setting spamassassin or rspamd by yourself may be complicated, but there are many free services available.
I often use the following (I have my own mail server, so I sometimes use these services for testing):
https://www.mail-tester.com/
https://mxtoolbox.com/
Our IP address recently got listed on UCEPROTECT-1 as a potential spam address, and we aren't able to figure out how to stop this. According to their website, UCEPROTECT-1 listing happens when: IP's get listed in Level 1 automatically if they either try to deliver e-mails to spamtraps or if they are involved in port scans or probes or any kind of attacks against our servers
Some research online suggests that the only way to ensure it doesn't happen again is to find out what is triggering these spam traps and plug them.
Any idea how we can go about looking for what is triggering these automatic listings? Any help would be appreciated!
Some background:
We use GSuite for our email servers, wix.com for our website, and namecheap.com for our DNS.
We'd originally paid to not be listed in the UCEPROTECT-2 and 3 listings but were automatically removed as soon as we got listed under UCEPROTECT-1.
I don't know how G-Suite works but in general check
logfiles of the outgoing e-mail servers for days with "strange" recipients patterns or for more e-mails than on other days
if your domain is listed on other blacklists, maybe that is giving you other hints
The problem is: if you are using the outgoing e-mail servers from Google and some of them are listed on UCEProtect (because other G-Suite customers are sending spam, mostly without knowing it cause they are hacked), you have little chance of fixing this yourselve. This is not really uncommon, me.com/icloud.com (17.58.63.0/24) is listed at UCEProtect right now too.
I'm looking to start using an SMTP or mail relay service. I've found quite a few out there, but I'm not sure if there are advantages to one vs another. The only requirements I have are:
can send "from" more than 1 domain (possibly >20 for all the different sites I work on)
can pay for a higher limit (I may need to send as many as 15000 in 1 day, although the average is <500)
can send from PHP (although I doubt this will be a problem as most are compatible with any language)
I'm okay with an SMTP service, mail relay service or a site that uses a custom API, although an API would make the conversion more difficult.
Reasons for wanting to do this:
I don't want to host any mail services my self as they just cause head aches
I don't have to worry about being blacklisted. If they are blacklisted they will know about it and have the knowledge to get it fixed.
Reporting on if emails have gone through would be nice.
I'm not sure why you would need this. If you read the proper RFCs (822, 2822, 823, 2823), you should be able to connect to any given site directly using SMTP. You need to be a little careful with Line Endings (should always be CRLF), and should probably add mail.add_x_header = OFF to your php.ini.
However, if you need a relay, I recommend using a spam filtering provider, as then you have protection from being blacklisted due to spammers abusing email-generating forms. I would recommend Red Condor for this task, but that is only because I work there, and know that we can handle it.
I've started using Mandrill and found it to be a great, reliable service provided by MailChimp that includes enough for most sites to use for free. Easy to setup, but also has a lot more functionality available.
What are the risks, if any, of sending out massive amounts of emails over SMTP? Specifically, this question is regarding the risks of being labelled/blacklisted as spammers of spoofers.
Our mails are legitimate, however. Our system needs to send out reminders to our corporate users on a daily basis, which may number into the thousands, say. Our worry is that with such a setup, our domain might end up being blacklisted by the receiving organisation, thus rendering our reminder service useless.
Does anyone have any information on what might be a "safe" volume of emails to send out to avoid being blacklisted? Or can we just churn out emails with abandon?
You may be able to contract a third-party organization to take care of this for you. I know there's a lot of "direct marketing" companies that will let you use their API to send mass email (newsletters, etc). They can do the work of negotiating to get off blacklists - that's what you pay them for.
I haven't used Sendloop and don't know if it has the functionality you want, but it's probably a good example.
See: How to conduct legitimate email campaigns
In your reminder service, just follow some basic spam guidelines. Identify where the message came from, why the user got it, the link to "opt-out" or discontinue the reminders, and you'll be fine. Any blacklists you do get on will certainly remove you if you have this information in your messages.
Additionally, should you get blacklisted for some reason, have another server on a different network that you can use as a backup should your primary server get blacklisted temporarily for any reason.
Oh, and one final note - usually your entire "domain" (i.e. whatever.com) doesn't get blacklisted. Specific IP addresses or specific servers are usually what get blacklisted.
As long as you're mailing over clean IPs and domains you should be fine. You say your mailings are "legitimate" so there's no reason to worry about ISPs blocking you.
However, as you also mentioned, the volume can become a challenge. Broadly speaking, sending "thousands" of messages should be a non-issue. But... hundreds of thousands, say 250K messages a day on up, is when you start to qualify as a "high-volume" sender.
Once you start sending at this bulk level, you must run a tight ship. ISP filters will look for any clue that you're a black-hat mailer/spammer and will promptly block your deployment if anything looks off.
Make sure your list(s) are spic-and-span; all bounces, duplicates, typos and honey-pots have been scrubbed-out. Your IPs have been properly warmed-up, your DNS and domains are clean and properly registered and you remain responsive to your list recipients.
Basic common sense and following through on all the tiny, simple but crucial details goes a long way.
We run a large online community in the Netherlands. Because of that we send a lot of mail to the hotmail email addresses of our members.
Recently we have noticed that not all mail is reaching our members, because we have hit a certain limit or so it seems.
Google doesn't give a solution (yet) but we see a lot of others having the same problem.
Note, We have added (since long) SPF records for our domain, in TXT and SPF types.
What else can we do to tackle this problem?
// Ryan
To add to what bzlm said, hotmail probably isn't rejecting your mails, so much as trying to use rate-limiting to prevent spam. That said, there are a few potential solutions you could use here. You could contact hotmail and see about getting your mailserver exemption status from their rate-limiting. Depending on the size of your community, they may or may not respond to you or be willing to work with you. I suggest this only as the "diplomatic" solution.
Or, you could set up two mail servers; one for hotmail users, and one for everybody else. I know from some of the sites that I run that a lot of people register with hotmail accounts, mostly because everybody has one which they use as a "spam dump" for online services where they don't want to use their real email address. So, as you no doubt realize, the number of hotmail users in your database represents a fairly substantial percentage. Therefore, when you need to send an email, you could determine whether to send it to your normal SMTP server, or your hotmail-designated one. On the hotmail SMTP service, you'd need to add some type of waiting mechanism to sleep a certain amount of time after receiving a 421 response.
The problem with this idea is that the number of hotmail users you have, plus the delay you'll encounter in sending, means that the queue length might very well exceed the number of mails you must send. You could alleviate this problem by setting up secondary/tertiary servers, preferably on other networks... but I'm getting ahead of myself here. At any rate, I did a bit of googling around (as you probably have, too), and this isn't such an uncommon problem, but there is no obvious solution to it.
So likely, you'll either have to create some type of slightly-unorthodox network workaround, or try the "diplomatic" route and contact an organization unlikely to care about your problem. I'd suggest doing both in parallel. :)
421 means that the service is not currently available, and that the client should try again. This could be for any number of reasons, including trying to discourage you from too frequent mailing if Hotmail thinks you might be a spambot.
Why not simply let your outbound smtpd queue the mails and try again?
Why is "not all mail reaching your members"? Don't you try again if you get a 421 response?
EDIT: Do what sqook says.
The only real way to "get around" this is to become a good e-mail citizen. Make it easy for people to unsubscribe from your notifications, establish complaint feedback loops with the major mail providers, remove bouncing e-mails from your list automatically, don't send people e-mails they don't want to receive. Failing to adhere to these simple requirements makes you look like a spammer, and providers like Hotmail will treat you like one.
The mail server IP connecting to Outlook.com server has exceeded the rate limit allowed. Reason for rate limitation is related to IP/domain reputation. If you are not an email/network admin please contact your Email/Internet Service Provider for help.
https://mail.live.com/mail/troubleshooting.aspx
I advise you too wait some times