SMTP Authentication Issues

[louisg29]

Need some help please. I am trying to get authenticated smtp relay working on my Zimbra 8.8.6 server installed on a centos 7 box. This is a single server install also. I am able to recieve email all day at the domain for it, both internal and external. I am not able to send though. I am utilizing a crappy ATT DSL service for this. I have followed the zimbra wiki like i have done in the past for Comcast and Verizon. I also did the settings at the bottom of the wiki specific for ATT yahoo. I also tried the SMTP.att.yahoo.com domain as well before trying the outbound.att.net one shown in the log message. Any pointers on how to correct the error below? Thank you in advance.

P.s. I know me@you.com doesn't exist



Feb 13 15:20:49 mail postfix/smtpd[25583]: input attribute value: outbound.att.net:587
Feb 13 15:20:49 mail postfix/smtpd[25583]: resolve_clnt: `' -> `ME@you.com' -> transp=`smtp' host=`outbound.att.net:587' rcpt=`Me@you.com' flags= class=default
Feb 13 15:20:51 mail postfix/smtp[26938]: 1B455112C5E96: to=<ME@you.com>, relay=outbound.att.net[98.138.84.52]:587, delay=0.92, delays=0.02/0.02/0.79/0.1, dsn=5.7.1, status=bounced (host outbound.att.net[98.138.84.52] said: 530 5.7.1 Authentication required (in reply to MAIL FROM command))

[dineshsk]

Hi Everyone,
I have one like this, I have integrate the AWS SES as a relay host with Zimbra, I can able to Sent the email, but I didn't receive any email if try send emails, it shows like

1. email-smtp.amazonaws.com rejected your message to the following email addresses:

2. The response from the remote server was: 530 Authentication required

Kindly help on this to resolve this.