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[archive] c$socket/e-mail

  • June 6, 2007
  • 3 replies
  • 0 views
D

[Migrated content. Thread originally posted on 05 June 2007]

Hi All,

Been trying to get a program going that sends e-mail. I downloaded the sample program that uses c$socket calls to accomplish this. I can get it to work but only if the e-mail recipient is using the same smtp server as the one sending it. If I try using an e-mail address, say to yahoo.com, I get the following error message:


553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)

I did a little research on this and found that it has something to do with "authenticating" the sending address...I think.

Anybody run across this one before?

Thanks,

Ted

    3 replies

    D

    [Migrated content. Thread originally posted on 05 June 2007]

    Hi All,

    Been trying to get a program going that sends e-mail. I downloaded the sample program that uses c$socket calls to accomplish this. I can get it to work but only if the e-mail recipient is using the same smtp server as the one sending it. If I try using an e-mail address, say to yahoo.com, I get the following error message:


    553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)

    I did a little research on this and found that it has something to do with "authenticating" the sending address...I think.

    Anybody run across this one before?

    Thanks,

    Ted
    Why don't you just interface with outlook, its much easier.

    Shaun
    D

    [Migrated content. Thread originally posted on 05 June 2007]

    Hi All,

    Been trying to get a program going that sends e-mail. I downloaded the sample program that uses c$socket calls to accomplish this. I can get it to work but only if the e-mail recipient is using the same smtp server as the one sending it. If I try using an e-mail address, say to yahoo.com, I get the following error message:


    553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)

    I did a little research on this and found that it has something to do with "authenticating" the sending address...I think.

    Anybody run across this one before?

    Thanks,

    Ted
    Yahoo, along with other email providers such as MSN, do reverse dns lookups on incoming mail. If the lookups fail or are blacklisted, the email will not be received. This will happen if the email is not coming from a credible source. A "bad" source could be an ip address only (could be spoofed) or some spam house.
    D

    [Migrated content. Thread originally posted on 05 June 2007]

    Hi All,

    Been trying to get a program going that sends e-mail. I downloaded the sample program that uses c$socket calls to accomplish this. I can get it to work but only if the e-mail recipient is using the same smtp server as the one sending it. If I try using an e-mail address, say to yahoo.com, I get the following error message:


    553 sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)

    I did a little research on this and found that it has something to do with "authenticating" the sending address...I think.

    Anybody run across this one before?

    Thanks,

    Ted
    Shaun - Will the Outlook interface you refer to also work for Outlook Express?
    Thank you for any info you can provide.

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