Wow -- this one's a toughie! I've searched and searched, and I keep coming up with references to a secondary error code of 320 instead of 298, which is the only one that Yahoo publishes a help page for: http://help.yahoo.com/kb/index?locale=en... I found a list of the meanings of the primary SMTP error codes here (this is page 2 of it): http://email.about.com/cs/standards/a/sm... which gives the meaning of 554 as : 554 - The transaction failed. Blame it on the weather.
(!?) That suggests it's a catchall code for errors that don't fit the other categories. Yahoo has evidently defined these errors for its own benefit and supplies the definitions in the secondary codes (the 298 in your case), but if they've published them publicly I haven't been able to find them. Are the attachments larger than the Yahoo limit of 25 megabytes?
If so, that's probably what it means. The 554 error code does relate to the data of the message itself in some way according to the standards document and the link I provided below for us communications geeks. If not, I can only suggest you go to whatever help page is provided on your gear symbol's drop-down menu (top right corner of mail page) and see if you can get a number to call Yahoo and ask for help.
... Note for the geeky: I can't find definitions of secondary error codes in the SMTP standards documents linked on this page either, but they're great for learning things about the SMTP protocol.
Something in the body of the message triggered their filters to reject it. See: https://help.yahoo.com/kb/yahoo-mail/smt... Message not allowed - 298 BODY "Your emails have become deprioritized due to the message content triggering our filters. We ask that you review the email's content for potentially objectionable content.
Yahoo is unable to disclose specific information regarding our filtering practices.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.