In development, I am using java mail sender to send mail notification.
But one issue till I found is, google algorithms use suspicious algorithm to check.
And in java mail sender I saw it some time. Till that time, you can't send email. Until you go to that machine from where you are calling and in-browser login with that credential and review activity in any system.
Is there any free version?
Best paid version I can think of Amazon AWS own SMTP server.
Related
I am using " Mailkit " to send emails from a dot net core console application (using smtp). It works when i run the application in my local machine and I receive emails.
However, when i deployed as an azure webjob, It does not send emails. I could see the job completes successfully and no errors logged. BUT i do not receive emails
I am just wondering how it works in local machine and it does not while run in azure.
Update:
Based on comments below, trying to be specific. can someone confirm if you were able to use Mailkit and an organizational smtp server(no public domains) & email account to send emails from an azure webjob ? or else please suggest what should be a working setup. thanks!
can someone confirm if you were able to use Mailkit and an organizational smtp server(no public domains) & email account to send emails from an azure webjob ? or else please suggest what should be a working setup. thanks!
No public domain means that we can't access the smtp server through the internet. As a workaround, you could save the mail information to a Azure Queue Storage from the WebJob and writing a new application and publish it to your internal network. In your new application, you could get the information from Azure queue storage and send the mail from your internal network.
While migrating from AWS EC2 instances to Google Compute Engine instances we got problems with sending emails via SMTP (Sendgrid).
I read a lot about it and read that the ports (587, 462, 25) of SMTP are blocked... And to read this article.
https://cloud.google.com/compute/docs/tutorials/sending-mail/#sending_mail_through_corporate_mail_servers
Questions:
For my understanding we should open a Cloud Launcher of SendGrid?
If (1) = yes, then I see it (the cloud launcher) does not support C# and our code today of sending emails is based on C#. So that we will have to change the code to one of those: Node.js, Python, Ruby, Go & PHP?
Is there any way to unblock this outbound connections on port 587 (or 462, 25)? Without Cloud Launcher.
Thanks in advance
1) Yes, if you want to use it through google. If not I recommend directly going to one of the smtp providers such as sendgrid, spakpost, mandrill... to get and account and use their smtp service to send mail.
2) You can use C# by simply not using the Cloud Launcher and purchasing an account directly from the vendor and usning their SMTP service.
3) No, port 2525 is free to send outbound emails to smtp providers through GCP so I highly recommend using that since it can be used for sendgrid as well.
Current Setup
I use Google Apps for personal / non-transactional emails. MX records for my domain point to google.
I have a dedicated IP for my LAMP server, and the SMTP port is available. I use cPanel to manage the server. I have created an email account through cPanel.
Goal
I want to use my host's native SMTP for sending transactional emails. I cannot use Google Apps SMTP because of per-day limit. These transactional emails need neither be saved in sent items nor replies to such emails be monitored.
Problem Area
I am not able to send transactional mails using host's native SMTP (not able to set this up, so no errors yet!)
Q1. Is the goal (using both host's native SMTP and Google Apps)
achievable? Looking at this and this, I believe it should be.
Q2. If yes, how should I setup in my cPanel? Please let me know if more [relevant] information about server setup is required to answer this.
Q1: Yes.
Q2: Same as if you were setting it up without Google Apps. Sending mail does not require any special setup. If you are still having difficulty, you need to check with your provider or ask the question of a cpanel expert -- the problem is unrelated to Google Apps.
What you didn't ask but need to know:
Cannot deliver email to Google Apps address; Gmail receives the same email fine
Why can't my server send outgoing email?
I want to host my own mailserver using my own domain. So far I can see that SMTP needs to be installed and the DNS record has to be modified to point to my mailserver. So far so good. But what about mailaccounts? How do I create mail#mydomain.com with username and password so I can start receiving emails in outlook?
What more does it take to be able to receive mails in outlook now that im done with installing SMTP on my server?
Installing just the smtp service isn't going to get you what you need. In order for users to get their mail you'd need a pop server, or an IMAP server or and exchange server.
What you need is a seperate mail hosting package. Something like Imail from Ipswitch. Or exchange from Microsoft.
SMTP is simply a mail transfer mechanism, it will receive emails for remote SMTP servers and then try an deliver them. It does not handle mailboxes or email accounts, for this you will need a POP3, IMAP or Exchange server.
I was wondering if anyone might be able to explain to me why it's taking nearly 30 seconds each time my Java web app sends an email using Gmail's SMTP server? See the following timestamps:
13/04/2010-22:24:27:281 DEBUG test.service.impl.SynchronousEmailService - Before sending mail.
13/04/2010-22:24:52:625 DEBUG test.service.impl.SynchronousEmailService - After sending mail.
I'm using spring's JavaMailSender class with the following settings:
email.host=smtp.gmail.com
email.username=myaccount#gmail.com
email.password=mypassword
email.port=465
mail.smtp.auth.required=true
Note that the mail is getting sent and I'm receiving it fine, there's just this delay which is resulting in a slow experience for the application user.
If you know how I can diagnose the problem myself that would be good too :)
It might be that gmail uses this delay to prevent spammers from using their SMTP server from the "outside": if the SMTP is called from the actual webmail client it would not use this delay.
In order to test this, you could open a telnet session to port 25 and do a manual SMTP session
(Search the web for SMTP HELO for examples)
GMail uses SSL for connection. To validate SSL certificate properly certain time is needed. Exact time depends on complexity of the certificate chain and use and accessibility of CRLs and OCSP checking. It's very likely that Java checks OCSPs for the certificate(s) presented, and this can be slow.
Try running your application on different system (preferably in other subnet) to exclude influence of firewalls. Maybe some part of communication (either SMTP itself, or CRL retrieval or OCSP checking) is slowed down by the firewall.
Depending on your OS, you should have a proper mail system that takes care of actually sending mails outside your network.
For instance, Postfix can do the job nicely. The configuration of Postfix would be on another thread, but typically Postfix would accept mails from your LAN (accepting to be a relay for your LAN) and would transfer the mails to gmail.
This is a exemple as to how setup postfix to have gmail as relay.
Having a mail service taking care of the relay of Gmail mails allows your Java application to be freed almost instantly (Postfix absorbs the mail, store it in its queue and forward it to Gmail itself).