0x8004210A – “the operation timed out while waiting for a response from the receiving server”


EQ Forum Admin
Staff member

If you are receiving this error it could be for several reasons:

  • The connection between your computer and mail server was disrupted (slow anti-virus, bad internet)
  • You tried to send a big email attachment that took too long to send
  • Your email server timeout settings are too short
Possible solutions include:

  • Temporarily turning off virus scanning to determine if that's the problem
  • Compressing large files before sending or using file sharing service to transfer the files
  • Increasing the mail server timeout settings configured in your mail program