Email / webmail issues
31-12-2021 10:44 PM - edited 31-12-2021 10:47 PM
I have 2 email addresses on my plusnet account, the main account and an additional mailbox. I have have had ongoing issues with the additional mailbox over the past 3 or 4 months. Firstly my Microsoft Office Outlook stopped sending emails so I had to resort to using my Iphone and webmail. Both of these have now stopped sending leaving me with no facility to send emails. No settings have been changed and I am still receiving emails. Any help appreciated.
Just to add, when trying to send using webmail I get a 'SMTP Error (535): Authentication failed' message.
Re: Email / webmail issues
I thought as much... you are not a Plusnet subscriber whilst using a retained free email service.
The security vetting of third party network connections is somewhat more stringent so as to protect the integrity of Plusnet's email relay services. This is very standard practice. I would suspect that your Sky IP address has been marked suspect. Unfortunately most email applications cannot discern the detail of 535 error states - they are all reported as "password errors" when they are probably not. You need to do some digging to find out what the real issue is.
Test SMTP authentication
I suspect that you will get the "source IP has a poor reputation" response. Once that has been verified, then the issue needs to be reported to Sky so that they can clean up the reputation of their IP addresses.
You can find your IP address here - What Is My IP? Quickly See My IP Address and My IP Location - and you can see if it is blacklisted here - IP Address Blacklist Check - WhatIsMyIP.com®