Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

Echekwara usoro a. Biko jụọ ajụjụ ọhụrụ ma ọ bụrụ na ị chọrọ enyemaka.

5.1.7 Invalid sender address syntax when asking for notification

  • 2
  • 1 nwere nsogbu anwere nsogbu a
  • 1 view
  • Nzaghachi ikpeazụ nke user1366614

user1366614
user1366614
more options

when sending mail with notication to provider KPN I get an 5.1.7 Invalid sender address syntax when sending without notification of recieving no problems what to do?

when sending mail with notication to provider KPN I get an 5.1.7 Invalid sender address syntax when sending without notification of recieving no problems what to do?

Asịsa ahọpụtara

I heard about an undocumented solution: using mail.planet.nl, port 25, ssl, no username (!) all working again

Gụọ azịza a na nghọta 👍 0

All Replies (2)

user1366614
user1366614 Jụọ onye nwe ya ajụjụ
more options

and I checked my sent mail header looking at the source of the message: there is no "Return-Receipt-To" ??? From - Mon Dec 12 06:22:20 2016 X-Mozilla-Status: 0001 X-Mozilla-Status2: 00800000 X-Mozilla-Keys: To: xxx@xxxxx.nl From: bbb <bbbbbb@planet.nl> Subject: test Message-ID: <f75a421a-b35f-4852-20de-316c3bf2f816@planet.nl> Date: Mon, 12 Dec 2016 06:22:19 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101 

Thunderbird/45.5.1

MIME-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit

user1366614
user1366614 Jụọ onye nwe ya ajụjụ
more options

Asịsa Ahọpụtara

I heard about an undocumented solution: using mail.planet.nl, port 25, ssl, no username (!) all working again