3
votes
2answers
2k views

SPF hardfail and DKIM failure when recipient has e-mail forwarding

I configured hardfail SPF for my domain and DKIM message signing on my SMTP server. Since this is the only SMTP server that should be used for outgoing mail from my domain, I didn't foresee any ...
5
votes
5answers
843 views

SMTP server, SPF records, domainkeys

Recently we have setup a new SMTP server to send newsletters and promotional mails to our registered users. There are 5000 users who will receive newsletters on weekly basis. We are getting bounced ...
0
votes
2answers
3k views

Yahoo flagging mail as spam when using relay server

I'm using Postfix to relay mail from my site to my mail server. Mail is received properly at my Gmail and Hotmail accounts - only Yahoo is the problem. The Yahoo mail headers state: Received-SPF: ...
6
votes
2answers
459 views

What are DNS TXT records and why are they needed

I am creating a server with a primary nameserver and mutliple domains. Do i need to make TXT records for all the domain, they all have there own email, but use the mailserver from the primary. EDIT: ...
4
votes
2answers
155 views

Email Server Validation Website

When sending emails I want my server to have DomainKeys and SPF records setup records correctly, is there a website I can email that does validation of my DomainKeys and SPF records?