Using Spring Boot web application to send email notifications via Ionos webmail SMTP not working

I have created a marketplace application which sends emails to users for various reasons, for example login or order confirmation. Everything works great when I send emails from Gmail but I can’t get it working using the website’s info email as a sender which is Ionos webmail.
spring.mail.port=587 (also tried 25 here)

This just doesn’t work – no error or anything.

When I use 25 as port, I get this:

Caused by: com.sun.mail.smtp.SMTPSenderFailedException: 550-Requested action not taken: mailbox unavailable
550 invalid DNS MX or A/AAAA resource record

at com.sun.mail.smtp.SMTPTransport.mailFrom(
... 103 more


CNAME   _domainconnect    Domain Connect  

MX  @    Mail    

MX  @    Mail    

CNAME   autodiscover Mail    

A   @  -   

A   www  - 

Does anyone know what I am doing wrong here? I am also using Apache reverse proxy with Tomcat.

applications – Is there an Android IMAP Webmail App?

Hello Android Enthusiasts :-]

I’m looking for an E-Mail App with multiple IMAP accounts that doesn’t download “body and attachments” on first install. I want it to behave like Webmail in a browser that only shows B&A on request.
Or do some E-Mail Apps have an option to uncheck the normal behavior ?
Please list me some from google-play-store, or
Thank you very much.

added gsuite mx records webmail stopped receiving mails

I have added MX records of the g-suite in the Cpanel. The webmail which is previously used stopped receiving mails and revoking back user not found. The previous priority for the webmail is 1

webmail – Sending contact form email from site if using Hosted Exchange

MS Exchange does not allow sending emails from any user that is not a user in Exchange.

Which means a form on our site can’t send from that user name or that user’s email for replying via SMTP/Exchange.

So how can we get emails from a customer clicking Support or Sales to ask a question and actually see their name in From. As to the their email, adding a reply-to is probably OK, but seeing an inbox full of “From:Support” won’t cut it.

We’re on a host now where CDONTS is used and works since it’s unauthenticated for sending, but this won’t be an option soon.

email: Exchange2013 only works with Windows 10 phones, webmail and email client, everything except MS OUTLOOK

So we recently upgraded our 2013 local exchange server to the latest rollup, I also think it's important to note that we use Office 365 for various things (but obviously not by email)

Does Mobile Phone Mail, Web Mail Client (OWA) ALL WORK? using the local Exchange 2013 server, so I know it works,
Does the Windows 10 Integrated Mail Client also work?

This is a great mystery to me. I have been working on it for days, the boss is NOT happy and every day that passes I fear for my life (joke).

But seriously there must be a reason why this is happening. Why does it work for everything EXCEPT MICROSOFT OUTLOOK?

Why are you asking us for passwords twice and is that so?
The first time, he tells us, we enter the email and the password, and it does not go through any problem
Second notice (which seems to me to be a Microsoft account notice) that doesn't pass
and prevents us from accessing our email.


pulling hair – thank you

Cpanel webmail does not deliver mail to a specific domain, but email is delivered to this specific domain through the client

I have WHM with my host, I migrated a new account to cpanel, I changed the A record and the MX record with the domain registrar,
Email is sending and receiving fine except to one domain, email sent by cpanel webmail from my domain is not received on the other end in this specific domain and it happened with 19 mailboxes in this specific domain, all claimed not to receive email neither in the inbox nor in the junk folder. The strange thing is that this only happens when using cpanel webmail, but when it is sent to this specific domain from Outlook mobile (i.e. a client), the mail is delivered immediately.
I am not receiving NDR in webmail, nor am I receiving a delivery or read receipt. I know the email is delivered or retrieved, but getting lost like this is a strange thing.
My accommodation company was contacted and told that the delivery report says it was delivered,
I added a new domain to the same WHM and created a mailbox and changed the name servers to the WHM host company, and tried to send emails from the new domain to the same specific email, but they don't receive it either and I do. not get NDR or confirmation

Any ideas where should I look? I checked all the DNS records (MX, etc.), I tried with DKIM and SPF and without them, anyway.

Password recovery for webmail: is there a script that uses cell / mobile phones?

I'm on my way over my head now. I use web hosting services / cloud aws. I am setting up a Moodle site and I have a recursive error. In order to … | Read the rest of

Database Email – SQL Server Outlook Exchange Webmail Purge

Good Morning

I am trying to purge emails from a particular EmailBox here

Now i get this error

Task '***@******.com - Sending' reported error (0x8004060C) : 'The message store has reached its maximum size. To reduce the amount of data in this message store, select some items that you no longer need, and permanently (SHIFT + DEL) delete them.'

Doing this has been very useless. I am doing my best to remove it, nothing seems to be working, this has been 1 week and it seems like I am not even doing anything.
Now I read somewhere that, you can run a DELETE SQL query against.

Please any ideas where the email records are stored in SQL Server so you can run an SQL query to remove this directly from the database. Do you like to purge the deleted items folder by email and also the drafts? Has anyone veined on a trip like this before?

cpanel: email not received in webmail

I have configured a web mail, it is configured but the problem is that I cannot receive mail, I can send mail to another domain, that is, gmail too. The message I receive when I send mail is:

Address not found

The response from the remote server was: 550 5.1.1
unknown user

enter the image description here

These are some of the settings:

enter the image description here

enter the image description here

Please help to solve my problem.

How do I transfer all my gmail mail to the webmail domain

I have a domain I want all my Gmail Mais to be transferred to my email How I do this? Someone has ideas about it. Please help