About a week ago, my PC’s mail client (Thunderbird) started to complain that it can not login to mail.comcast.net and i could not send any email.<\/p>\n
It continued to do so for about a couple of days. my wife’s PC was in the same condition.<\/p>\n
When I logged into Comcast web mail, an e-mail from Comcast was waiting. It basically told me that due to suspicious activity, they blocked my port 25 to protect me being from a victim of security attack.<\/p>\n
It also tells me how to setup a client to listen to another port. \u00a0So I went ahead and setup my client to use another port. \u00a0That was an end of the story for Comcast mails. (outgoing port 25)<\/p>\n
However, I also have hMail server running for my own domain in my home server. the mail server receives emails via port 25 (incoming) this was also blocked, so I was not receiving any mails.<\/p>\n
The my domain is served by TZO DDNS service. \u00a0they also offer the service called Store and forward. \u00a0The service can be a proxy receiver for mails sent to my domain, then it will forward them to my PC via port of your choice. \u00a0SO I had to buy this service and configured the service to use another port (in my case 8025) to forward emails to my domain. \u00a0 In the htserver admin panel, I added smtp port 8025 so that the server can listen to the port.<\/p>\n
<\/p>\n
Now the home mail server started to receive mails again.<\/p>\n
I hope Comcast eventually removes this block after a while so that I can revert back to normal setting and unsubscribe from this Store and Forward service.<\/p>\n","protected":false},"excerpt":{"rendered":"
About a week ago, my PC’s mail client (Thunderbird) started to complain that it can not login to mail.comcast.net and i could not send any email. It continued to do so for about a couple of days. my wife’s PC was in the same condition. When I logged into Comcast web mail, an e-mail from Comcast was waiting. It basically told me that due to suspicious activity, they blocked my port 25 to protect me being from a victim of security attack. It also tells me how to setup a client to listen to another port. \u00a0So I went ahead and setup my client to use another port. \u00a0That was … Continue reading