Thanks Bill for the clarification as well as the offered solution 😊
-Ursprüngliche Nachricht-
Von: mailop Im Auftrag von Bill Cole via mailop
Gesendet: Donnerstag, 20. Januar 2022 21:17
An: Glowfish Domainadministrator via mailop
Cc: Bill Cole
Betreff: Re: [mailop] Anyone from United
On 2022-01-20 at 14:04:36 UTC-0500 (Thu, 20 Jan 2022 19:04:36 +)
Glowfish Domainadministrator via mailop
is rumored to have said:
> Hi,
>
> Emails from united are getting rejected by our postfix mailserver. The mails
> seem to be from United Airlines (Mileage Plus).
[...]
> Jan 20 19:16:47 m
For the record, in practice it is TOO limiting to expect both forward
and reverse match, and especially if your system doesn't look at
multiple records correctly, eg ANY A <> ANY PTR should be enough.
But expect a lot of false positives if trying to get them to match in
any case. As long as t
That looks like Sendgrid, so they may be able to ping United.
I have the contact of their CTO, but you may get quicker help from
SendGrid.
On 1/20/22 2:04 PM, Glowfish Domainadministrator via mailop wrote:
Hi,
Emails from united are getting rejected by our postfix mailserver. The
mails see
Hi,
Emails from united are getting rejected by our postfix mailserver. The mails
seem to be from United Airlines (Mileage Plus).
Jan 20 19:16:45 mta01 postfix/postscreen[126746]: CONNECT from
[50.31.61.242]:47664 to [xxx.xxx.xxx.xxx]:25
Jan 20 19:16:45 mta01 postfix/postscreen[126746]: WHITELIS
Hi,
Emails from united are getting rejected by our postfix mailserver. The mails
seem to be from United Airlines (Mileage Plus).
Jan 20 19:16:45 mta01 postfix/postscreen[126746]: CONNECT from
[50.31.61.242]:47664 to [xxx.xxx.xxx.xxx]:25
Jan 20 19:16:45 mta01 postfix/postscreen[126746]: WHITELIS
