Own sender address: sender addresses consist of the displayed sender address (FROM, header from) and the technical sender address (MAIL FROM, envelope from, shown as 'sent by ...').We recommend that you use both addresses and secure them with SPF and DKIM - you can also pass the DMARC test of your domain with it.
FROM (header from): Please contact yve support so that the email can be verified and then activated. Caution: Some e-mail servers block or issue warning messages for e-mails that have their own e-mail address but were sent from a third-party e-mail server or if the FROM address and MAIL FROM address are different.
Whitelisting: Your IT creates our server as an allowed sender via a spam filter exception rule. Our email servers are: yve-mail-01.yve-tool.de to yve-mail-14.yve-tool.de
DKIM: yve signs with the domain yve-tool.de. We can create a DKIM signature for you. To do this, you must make the following entries in your domain: CNAME yve._domainkey yve._domainkey.yve-tool.de . Please contact yve support to have the signature created.
MAIL FROM (envelope from): You can use our MAIL FROM or your own:
yve MAIL FROM: The MAIL FROM remains set to firstname.lastname@example.org, this is displayed on some email clients (e.g. as a substitute such as 'sent by'). Caution: There are email servers that expect the FROM domain to be the same as the MAIL FROM domain. We therefore do not recommend this option.
Own MAIL FROM: We can also set up your own MAIL FROM for you:
Whitelisting: To do this, you would have to whitelist our servers in spam filters
SPF: An SPF record must be entered in your domain as a TXT record with the value 'v=spf1 mx include:spf.yve-tool.de ~all'. If you already have an SPF record, just add 'include:spf.yve-tool.de'.