Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Why do some of my contacts not receive my emails?

  • 1 reply
  • 1 has this problem
  • 5 views
  • Last reply by Matt

jaleonatti
jaleonatti
more options

Some of my contacts can't receive my emails. I get the following error messages: 

"Remote host said: 553 5.1.3 bad address syntax"

"Remote host said: 501 Invalid Address [RCPT_TO]" "Remote host said: 501 Syntax error in parameters or arguments [RCPT_TO]"

I have talked to them personally and they say they aren't trying to block my messages.

The email addresses involved never used to give me a problem. Now it's every time.

Some of my contacts can't receive my emails. I get the following error messages: "Remote host said: 553 5.1.3 bad address syntax" "Remote host said: 501 Invalid Address [RCPT_TO]" "Remote host said: 501 Syntax error in parameters or arguments [RCPT_TO]" I have talked to them personally and they say they aren't trying to block my messages. The email addresses involved never used to give me a problem. Now it's every time.

All Replies (1)

Matt
Matt
  • Moderator
  • Top 10 Contributor
more options

are you requesting return or read receipts?