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Dec 16 19:21:35 proxmox postfix/smtpd[1113]: connect from mail.MyDomainName.com[10.10.100.15] Dec 16 19:21:35 proxmox postfix/smtpd[1113]: 78D8080154: client=mail.MyDomainName.com[10.10.100.15] Dec 16 19:21:35 proxmox postfix/cleanup[1119]: 78D8080154...

Exchange is not the problem because exchange is sending the messages to PMG via the smart host to handle it. Now the problem for some SMTP servers are rejecting my messages with "550 Access denied - Invalid HELO name (See RFC5321 4.1.1.1) (in replyto RCPT TO command)" . So, I need to enable SMTP...

while sending e-Mails that's the log message "550 Access denied - Invalid HELO name (See RFC5321 4.1.1.1) (in reply to RCPT TO command)" Also, I added smtp_helo_name = mymailserver FQDN to the main.cf.in file

Any Help ?

Dear aaron, Thanks for your reply. that's what I did exactly, Exchange Configuration: 1- Configured my MS Exchange receive connector with port 25 2- Configured my MS Exchange Send connector with port 26 and routing through PMG FQDN as a smart-host PMG: 1- Relaying: - Default replay: my...

Dear Guys, Please note that I'm new here. I just installed PMG-VM and I'm looking for a best practice configuration to integrate my PMG with my MS Exchange Server for inbound and outbound e-Mails. Also, I did a registration in Barracuda and SpamHaus but I don't know also how can I use them with...