Over the past month I've been unable to send emails through my ntl account using my Apple tablet, phone or iMac. I keep getting 'user name or password do no match'. I've contacted Virgin Media who reset my password to try and synchronise the servers but this did not resolve the issue. I've been on the help page and followed 'setting up an email account on mac' using both the IMAP and POP settings but I keep getting the same problem 'Unable to verify account name or password'. I can access my email inbox through the online web browser but when I try to forward emails to either my apple or ntl address they are not received, but, getting emails from other sources is fine. However, in the setting I have to tick 'unified mail for this account'. Can anyone help with this problem?
where my_email_address should be replaced with your email address. When prompted enter your password and towards the tail of the output there will be a line starting either < 235 or < 535, post just that line here.
As a Very Insightful Person, I'm here to share my knowledge. I don't work for Virgin Media.
The line < 525 5.7.13 Authentication Denied (VM305) indicates your public IP Address is on Spamhaus's SBLCSS and a device on your local network is sending out spam, read more here Searching for Spambots on your network. To confirm the listing on Spamhaus:
… should have added that if you do not have a Windows 10 device then the issue can still be troubleshoot from your iMac. If after reading Searching for Spambots on your network you still need help post back here.
On the off-chance, if you have Hola VPN installed on any device remove it as it is a know source of spambot activity.
Wireshark (or similar tools) provides a precise method to locate spambot activity on devices whereas other methods are likely not only to be inconvenient but scattershot in approach.
Do you have a family member or friend who might understand 'Searching for Spambots on your network' and be able to help you? If not I will try to put together a step-by-step guide to help you locate the spambot when/if I have time. In the meantime can you summaries what type of devices are connected to your home network, for example, iPad, iMac, Smart TV, etc.
Also, are you able to connect to the internet using an Ethernet cable from your iMac?