SMTP ERROR: DATA NOT ACCEPTED
Please read this article:https://postmansmtp.com/storedrv-submission-exceptionsendasdeniedexception-mapiexceptionsendasdenied/
Incorrect authentication data
SPF Some users reported that creating an SPF record solved the issue.https://wordpress.org/support/topic/incorrect-authentication-data-port-587-smtp-starttls-siteground/ Cpanel Possible solutions: Login to CPanel > Tweak Settings > All> “Restrict outgoing SMTP to root, Exim, and mailman (FKA SMTP Tweak) and switch it from “On” to “Off”. The problem may be the cPHulk (login blocking software). So adding the external IP …
Invalid “To” or “Reply-To” e-mail address
The error can happen because of one of these reasons (try one each time, in the order listed) Try to disable email validation Some plugins are “hijacking” the field with unauthorized value so you can try this: Check that you don’t have any restricted chars around the field like quotation marks
“Permission denied” while trying to send an email
The SELinux is the culprit! You need to enable the sending of emails from one of its Boolean values to allow you to send these emails. It works at the Kernel level and is a MAC (Mandatory access control). If you execute the command: getsebool -a You will have a list of values. There is …
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Bad HELO – Host impersonating
This solution applied to other control panels too like Cpanel. This is a default Exim ACL in DirectAdmin and is prone to re-introducing itself on updates. It should have been removed, contact your web hosting support. Some plugins hijack the filed value with restricted value, Try to configure this inside the settings (“Show all settings” …
Post SMTP 2.0.6 – Bug Fixes
Hi,First I want to start by saying this:Don’t worry I’m not going anyway (at least in the near future).I disappeared from the support forums and that cause a bit of worry for some users. September-October it’s a holiday season in my country and beside that, I’m one man and I’m trying to do a lot …
The things I learned while maintaining a WordPress Plugin
A bit of …. Almost two years past from the date I started to maintain and develop Post SMTP plugin and let me tell you something, it’s one of the best roller coasters I had the pleasure to ride. No one is preparing you for the show behind the scenes, you do develop, support, design, …
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Forums are closed
I’m doing a bit of order and closing this forum. There is no point giving the same support level here if I can do on the plugin official support forum located here: https://wordpress.org/support/plugin/post-smtp/ Meaning if you want support head over to the link above. I’m thinking of offering more premium support with access to a …
Post SMTP 2.0.2 – Sendgrid code fix
Hi, I’m going to make this short: The default method selected (no configuration made) will use the default server mailing and not SMTP. Even if you have a local SMTP server, select SMTP and define it as your web host is instructing you. The scary message that almost made me go back to an old …
Post SMTP 2.0.1 – Mailer Type and much more
Hello to every one, After a long time, I’m happy to release version 2.0. Before I start diving to what’s new in this version, I have a few stuff to say on a personal level. There is no one in this world happy more than me about the amazing success Post SMTP is getting on …