550 validating sender outlook

If you’re getting an “Unauthenticated Senders Not Allowed” error, the problem usually lies in authenticating with our SMTP server.This error gets triggered when there was an attempt to hand over an email message through smtp.before authenticating the connection with your Send Grid username and password.Any suggestions on what questions to ask or how to fix this would be helpful.I'm using a desktop version of Outlook 2007 and connecting through my ISP. Of course you're not being blocked because the NDR states "recipient rejected", not "sender rejected".Subject:test Content-Type:multipart/alternative; boundary="_000_84FAAD8507696C4F93FADE7914BC20D9083FCB75_"*****************************************************I have only two MX records pointing to mx & mx2.

My client's IT guy says we're not being blocked, but I cant think of any other reason the bounce would occur.

It will take some time for the MX changes to propagate after which you will start receiving mails in Zoho. I setup an email account for a client but can't send them email from my work email. Here is the error message I get: Delivery to the following recipient failed permanently: [email protected] details of permanent failure: Google tried to deliver your message, but it was rejected by the server for the recipient domain by smtp. The error that the other server returned was: 550 5.1.1 ----- Original message ----- DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bnbwebsites-com.20150623.gappssmtp.com; s=20150623; h=from:content-type:subject:message-id:date:to:mime-version; bh=/6m Ut4r Rh XLSDs3V96z7P9udc AHXNcl BXpth ODGT fg=; b=Ab XLyg AOho Y7k Xkm2gv5g KJVNI7BPl Rc Cpo IMd Rw Zy Scn1bo D0j5q XYm A1Eg G8F9k/ VXn0GAGbb2D1pm Skjesuv JA6t CKm2A03q T2gy Q1A2OKvd OXs KVLd I4eke LO4EY4ng R1n Vpf Ka Fi GX hksl0uk Xkid FMX7p Bh C8MIs Dh Eu8q Cd Wz Jrk Jcq6a Jf ZL6/ewv7Bk OW5V 0tty Onyia T/Qxwjj3jjw Y8H9V/tacvah4v NKZFB DIpv ZTY QT1db EFz KK3N6t Vwc BQf ya6 QRef UOb Agiah8Bg/8sth Z4SFQhw Xq n IEws Om Cp1TP pj ALk Vo Re/SJj YSY u6OU 580Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:content-type:subject:message-id:date:to :mime-version; bh=/6m Ut4r Rh XLSDs3V96z7P9udc AHXNcl BXpth ODGT fg=; b=j MON1JK99bzn NEOIFp Vrh Yj6lv8ae7x Yd Ua4y8n3gm QYAo RDHd GNc Gs L U54fo Q6IC Gb9em k Js R1A3w Gih2QADl5u Eu Rsw5Mxn AKvtk XEI6Ke1QDn OCT lc8onfyb Wzabeo53 vl34a Qcf NBR97 7UYsj Fs7XYfg EVWKe Rt Kl Gw/SFWM4g X/Jl2P2Si/USPtz16S2PNkt Y Wq5r QNg NLu MSFLv Mm2Sy ITCzgv/8l Pd TZa0dup5Mp AAAq T7FAQMyc S8D5jd Ef Fa G2P3 ct Wm Ze Btl0H58/j ODuam Ul Aiq V4UC8Itlor7bi Kjq OX0ECMs UTKDPx Yt YYc AKSY7vt j WA== X-Gm-Message-State: AG10YOQ i/Qix1dvd UZqs MAjqi60D8 LJ7q1Nzd5PMk BZKya YGv0WAp Az4KHgk LRw GBg== X-Received: by with SMTP id fr2mr8380890obb.54.1455831236706; Thu, -0800 (PST) Return-Path: When i try and send an email i get the following message, however i have checked my DNS settings and they have not changed from last night. Regards, Balakumaran [email protected], The above email was rejected due to invalid SPF record configured on your domain's DNS page.

Kindly login to your domain's DNS page and update the SPF record as below:v=spf1 mx include:-all (if your emails will originate only through Zoho servers)or v=spf1 a mx ip.101.127.166 ip.22.4.242 ip.22.4.169 ip.22.4.243 include:-all Do save the changes and monitor for couple of days for the changes made to propagate globally.

From this 3rd party link, the MX records of your domain are still pointing to Go Daddy. Regards, Balakumaran [email protected], The above email was rejected by the destination server as the email address does not exists.

Please sign into your domain management page at Go Daddy, delete the existing MX records and point them to Zoho as per this help page. com with the header (show original) with full message of that email on the sender's sent folder from the mail client (like MS Outlook, Thunderbird, Mac Mail and etc.,) and the complete error message so that we could assist accordingly. If you are sure that the email address exists, then do contact the destination server's email provider or mail administrator and check with them.

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