1 2 Previous Next 16 Replies Latest reply: Apr 17, 2011 6:02 AM by Keith Clayton
JDFink Level 1 Level 1 (0 points)
I have Comcast as my service provider. About three times now, I have had an issue with Comcast not allowing me to send emails. I can receive them, but not send them. I have had to delete the Comcast account from mail and make a new one. This has not only been on our Mac's but our iPhones as well. I have gone through several technicians that say it is on our end, but I don't believe it is.

Has anyone else had this issue, and did you find a solutions.

Thanks!

MacBook Pro, Mac OS X (10.6.5)
  • 1. Re: Comcast Email Issues - Can't Send Emails
    etresoft Level 7 Level 7 (24,270 points)
    Big cable ISP such as Comcast like to redirect all port 25 traffic to their own web servers to reduce SPAM. SPAM is much less likely when using secure connections over port 465 and 587, so these are usually open. Newer versions of Apple mail will try all of these, but if you aren't using secure mail and port 25 responds, it will try to use that. The best solution is to use secure mail and if that alone doesn't do it, try specifying port 465 or 587 manually.
  • 2. Re: Comcast Email Issues - Can't Send Emails
    JDFink Level 1 Level 1 (0 points)
    MacMail is selected at "Use Default Ports (25, 465, 587)" also selected "Use SSL" is that secure mail?

    This has only started happening in the last few months with the new equipment. Should I just select "Use Custom Port" and choose one of the others?

    Thanks
  • 3. Re: Comcast Email Issues - Can't Send Emails
    Cactus Pete Level 1 Level 1 (0 points)
    I have been having the same sending issue with Cox. I tried port 465 and it worked! Thanks. Mail seems to use port 995 and works, but did not work with Entourage 2008.
  • 4. Re: Comcast Email Issues - Can't Send Emails
    Ernie Stamper Level 8 Level 8 (37,475 points)
    Clarification, please, since Port 995 is for incoming POP servers using SSL, while Port 465 is for the SMTP (outgoing server) with SSL. They are entered at different places in the setup preferences.

    Ernie
  • 5. Re: Comcast Email Issues - Can't Send Emails
    JDFink Level 1 Level 1 (0 points)
    Pete, Once I made the suggested changes, I have not had the problem reoccur again. I have to say it was VERY frustrating especially since Comcast was absolutely no help what so ever! I love Apple Discussions Groups just for things like this! Take care.
  • 6. Re: Comcast Email Issues - Can't Send Emails
    STDenver Level 1 Level 1 (0 points)
    I have the exact same issue, you posted in 2007, 3 plus years later it is still an issue. Does anyone have an answer?
  • 7. Re: Comcast Email Issues - Can't Send Emails
    auribe Level 1 Level 1 (0 points)
    I currently have the same issue since a couple of months ago. I am thinking about quitting working with mac mail. I write my messages to find out two hours later that they are still in the outbox. Sometimes they leave, sometimes they stay there until I click the send button a hundred times.

    It is happening in my macbook as well as in the ipad.

    I tried changing the ports as said in the above discussion, but it is not working. Does someone know how to deal with this?
  • 8. Re: Comcast Email Issues - Can't Send Emails
    eedanielson@mac.com Level 1 Level 1 (0 points)
    I gave up on Comcast email service over three years ago. Since then, although I still use a Comcast email address, I route all email through mac.com and have been very happy with that. Of course, it costs a few dollars annually to do this but I have never had any luck with Comcast support re: any other solutions.
  • 9. Re: Comcast Email Issues - Can't Send Emails
    Strgzr Level 2 Level 2 (180 points)
    Well I had problems with Mac Mail and Comcast, so switched to Thunderbird Mail and all comcast settings working fine.
    http://www.mozillamessaging.com/en-US/thunderbird/download/?product=thunderbird
  • 10. Re: Comcast Email Issues - Can't Send Emails
    DrChaos Level 1 Level 1 (0 points)
    I, too, had (have) problems receiving and sending mail via Comcast using the app Mail.
    But switching to Thunderbird has not helped. (Oddly, I do not have the same problems using Mail on my iPhone). As have others, I worked at length with Comcast tech support, with them concluding the problem was Mail, not Comcast. The problem: "'mail.comcast.net' refused to allow a connection". I have tried a number of ports and SSL off and on - btw, one comcast helper said SSL off, another said SSL on.
    Again, Thunderbird produces same errors.
  • 11. Re: Comcast Email Issues - Can't Send Emails
    JDFink Level 1 Level 1 (0 points)
    DrChaos, see the earlier posts and try changing your port settings as recommended. That is what help solve my issues with Comcast. Have not had any trouble since.
  • 12. Re: Comcast Email Issues - Can't Send Emails
    Csound1 Level 8 Level 8 (35,365 points)
    auribe wrote:
    I currently have the same issue since a couple of months ago. I am thinking about quitting working with mac mail. I write my messages to find out two hours later that they are still in the outbox. Sometimes they leave, sometimes they stay there until I click the send button a hundred times.

    It is happening in my macbook as well as in the ipad.

    I tried changing the ports as said in the above discussion, but it is not working. Does someone know how to deal with this?


    Keep MacMail, dump Comcast
  • 13. Re: Comcast Email Issues - Can't Send Emails
    JDFink Level 1 Level 1 (0 points)
    Here is the one thing that Comcast forgets to tell you. Once you have made the port changes and saved them, you have to shut down the Mac or device, then you have to power cycle the modem. Once you have the modem up and running again, then turn the computer and devices back on.
  • 14. Re: Comcast Email Issues - Can't Send Emails
    etresoft Level 7 Level 7 (24,270 points)
    DrChaos wrote:
    I worked at length with Comcast tech support, with them concluding the problem was Mail, not Comcast. ... Again, Thunderbird produces same errors.


    That fact, and the 20 million other Comcast customers using Apple Mail, says Comcast tech support is wrong.

    The default settings try multiple ports at once and one of them is returning an unexpected error so it never tries a port that will work. Click the box to set a custom port number and enter one of the other port numbers. That will cause it to bypass the one port that is problematic.
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