Emails being returned with following error: Need Rcpt command

I am seeing a lot of emails returned to me with variations of the errors below. It seems to depend on the domain I’m sending the email to. Most get through fine. I have searched everywhere for a solution and am exhausted. Does anyone have any ideas? Thank you

SMTP Protocol Returned a Permanent Error 554 Server said: 503 Need Rcpt command

SMTP Protocol Returned a Permanent Error 554 Server said: 503 valid RCPT command must precede DATA

SMTP Protocol Returned a Permanent Error 554 Server said: 554 No valid recipients specified

SMTP Protocol Returned a Permanent Error 554 Server said: 503 5.0.0 Need RCPT (recipient)

Subject: Emails being returned with following error: Need Rcpt command

are you replying to an email or creating a new one?

if this is repeatable when sending to specific addresses the try the following;

tell router stop (on outgoing smtp server)

send message to address

open mail.box on outgoing smtp server

find message and look at the document properties

what is the value of the “recipients” field?

thats the address it’s trying to send to, is it still the same?

you could also turn on some of the smtp debugs, or test manually via a telnet session on port 25 and using that recipient address see what happens

do other people have problems sending to that address or is it just you/your company?

btw. SMTP Protocol Returned a Permanent Error 554 Server said: 554 No valid recipients specified

could be a ‘bad’ way of saying the user does not exist, instead of returning a 554 for each invalid recipient (in which case domino would abort) it could be just 250 OK’ing them and then barfing at the DATA command instead.

Subject: RE: Emails being returned with following error: Need Rcpt command

Thank you for your reply. I did further testing (with your help) and it seems to be a problem caused by avast! which is the anti-virus program I use on my computer. Here is a link to that discussion thread if you’re interested. It’s pretty informative.

Subject: Emails being returned with following error: Need Rcpt command

Does the mail have anything in to “To” field or only in BCC ?

Subject: RE: Emails being returned with following error: Need Rcpt command

The ‘To:’ field is populated. Nothing in ‘bc’ or ‘bcc’. 75% get through fine, but I sure hate not being able to communicate with 25% of the world! Thanks for your reply, I’m going nuts trying to figure this out.