Yesterday I was suddenly unable to send email. What was odd was not only had I not changed anything, but I could connect to neither the comcast SMTP server or other SMTP servers.
I remembered back to an email I received from Comcast which said something about me having a virus. Knowing that wasn't the case, I didn't read the rest of the email. Here's the email in full:
Dear Comcast Subscriber:
ACTION REQUIRED: Comcast has determined that your computer(s) have been used to send unsolicited email ("spam"), which is generally an indicator of a virus. For your own protection and that of other Comcast customers, we have taken steps to prevent further transmission of spam from your computer(s).
Comcast.Net WebMail Users
If you use a web browser to access your email, this change will not affect your service. However, it is important that you take steps to remove the virus and secure your computer(s). Comcast offers FREE McAfee Antivirus and Firewall software for your protection. Visit the Comcast Security Channel (
www.comcast.net/security) to take advantage of this free software.
Third-Party Mail Client Users (Outlook, Outlook Express, etc.)
If you use Outlook Express, the steps we have taken will not allow you to send email until you apply a one click fix available at
http://www.comcastsupport.com/alternateport. Though this will restore your service, the virus will still remain until you take steps to remove it using the FREE McAfee Antivirus and Firewall software available on the Comcast Security Channel (
www.comcast.net/security). If you are using a third-party client other than Outlook Express (Outlook, Eudora, Thunderbird, etc.), please visit
http://www.comcast.net/help/faq/TB25.
Comcast is focused on providing a secure internet experience for all of our customers, . Please visit the Comcast Security Channel regularly at
www.comcast.net/security to stay up to date with the latest security threats , products, and services
If you have additional questions please visit (
www.comcast.net/help) .
Thank you for choosing Comcast!
Sincerely,
Comcast Customer Security Assurance
At first glance I thought the "action required" was for me to download McAfee. Using only Macs and not having an email client configured on my PCs, plus them having been recently formatted, cleaned and external access blocked behind a firewall and NAT, I knew I didn't have a virus. So I ignored it.
Unable to send email, I reread the email and tried step #2. When I did that, it said I needed IE. I tried it on my PC and it was clear it needed IE & Windows. However, it's an application which reconfigures the email client to get around the block. Doesn't help me when I send email from a Mac.
So I contacted Comcast support online via Live Chat. I explained to the guy what was going on. I selected the options to have me routed to the right person, that being trouble sending mail and my email client being Mac Mail. The guy I ended up with stated there are only two reasons I would get such an email - that I had a virus or I was spamming. I said I have a Mac and there are no known viruses for Macs, and I certainly haven't been spamming. So I asked how they determine I was spamming and he said he couldn't tell me because it was "proprietary."
He asked me if I had antivirus software installed. I said no. He suggested I follow the steps in the email. I pointed out, again, that I was on a Mac, the second link didn't work for me on a Mac and the first is for software which is Windows only. He insisted I needed to install antivirus software and that was the only way to get the block disabled.
I repeated that there are no know viruses for the Mac, and certainly none that send spam. So I asked if we could just rule out that as the cause. He said no. I asked him if he was saying there are viruses for Mac OS X and he said the viruses don't matter what platform they're on. He said all it matters is that you have an email client. Knowing that's complete BS, I said to him "Sir, that's simply not the case." He then said "One moment" and then failed to respond for over an hour.
Meanwhile I cited a reliable source (sophos) providing a link and a quote stating there are no know viruses for Mac OS X.
At the same time I posted on other forums looking for workarounds. One person suggested I check to see if my IP had recently changed. I've had the same IP for over three and a half years, but noticed it had indeed recently changed. Looking at my posts here, I discovered it changed when we had the power outage here and I got a new IP on the 18th. The email was dated the 22nd.
It appeared my new IP had been used by a spammer and my old IP had gone to a new home. One forum poster stated he did not think Comcast could block ports based on user, just IP. So if I released my external IP I should be fine. In the middle of file transfers I didn't want to restart my router, nor did I want to shut off the rest of my internet access for a half hour+.
So I called Cocmast. First guy was completely clueless, then we got disconnected while I was on hold. Next person said in order for the block to be removed, I had to not use my account for 48 hours. Not an option. I took a hard line of "I have been unjustly blocked from sending email and this block will be removed immediately." This person was at least knowledgeable enough to rule out a virus since I was on a Mac.
She put me on hold a few times, saying that there's no way she's aware of to get around the 48hr block. I asked if she didn't know, that she transfer me to someone who did. She said she was interested too, so she inquired and found out I can just change my SMTP port and it will be fine. She apologized for the block, and stated the reason for the block was likely that I picked up an IP used by a spammer. She also said this particular block was not limited to 48hrs like she thought. She suggested I shut off my modem for a half hour and try to get a new IP. When I asked what will happen when someone else picks up the IP that has been blocked, she said she wasn't sure.
I can send email again, but have to reconfigure all of my email clients. Hopefully that configuration also works when I'm on the road. The first guy's response pissed me off enough I've sent a formal complaint to Comcast and asked to receive a confirmation that his superiors were made aware of the situation.