Dave H wrote:
> Oops!
> My apologies all, I'm not on any tech support mailing lists and wasn't aware of the etiquette.
>
> As a key:
> Company a = dcarbon8.com
> Company b = co2e.com
> Company c = angryfish.com
> Company d = espeed.com
>
> SMTP error from remote mail server after RCPT TO:<BBaldridge@???>:
> host smtp-gw.x-mailer.co.uk [213.253.170.46]:
> 550-Recipient verification failed (recipient) Callout verification failed:
> 550 550 #5.1.0 Rejected by bounce verification.
>
> despite dcarbon8's email being managed by angryfish, the servers are owned by dsvr.com
> smtp-gw.x-mailer.co.uk is, I believe, the link to the outside world from dsvr.
>
> The telnet sessions I attempted were.
>
> telnet mail-ip.cantor.com 25
> Trying 148.106.1.97...
> Connected to mail-ip.cantor.com (148.106.1.97).
> Escape character is '^]'.
> 220 ***************************
> HELO dcarbon8.com
> 250 mail-ip-in.cantor.com
> MAIL FROM:<>
> 250 sender <> ok
> RCPT TO:<AJakubowski@???>
> 550 #5.1.0 Rejected by bounce verification.
>
> I then tried
>
> telnet mail-ip.cantor.com 25
> Trying 148.106.1.97...
> Connected to mail-ip.cantor.com (148.106.1.97).
> Escape character is '^]'.
> 220 ***************************
> HELO dcarbon8.com
> 250 mail-ip-in.cantor.com
> MAIL FROM:<carl@???>
> 250 sender <carl@???> ok
> RCPT TO:<AJakubowski@???>
> 250 recipient <AJakubowski@???> ok
> DATA
> 354 go ahead
> Subject:Test from dave@???
> Please email dave@??? if this is received
>
> .
> 250 ok: Message 21723617 accepted
> QUIT
> 221 mail-ip-in.cantor.com
>
> mail-ip.cantor.com is the first mx record for co2e.com
>
> Apologies for the masking of details, Thankyou Marc for making me aware of this.
>
Well, espeed.com uses non RFC compliant mail servers as they don't
accept bounces. But to solve your problem, you should maybe only do a
recipient callout on domains you own or relay mail for.
deny
domains = +local_domains : +relay_to_domains
!verify = recipient/callout=60s
instead of only
deny
!verify = recipient/callout=60s
Or you can also use a recipient callout using the sender name
(/use_sender), but I don't really see the point of doing a recipient
callout on foreign domains.
