Upgrade smtp-pool lib fixing non-FQDN hostnames. Closes #2146.

Author: knadh

go.mod

@@ -23,7 +23,7 @@ require (
 	github.com/knadh/koanf/providers/rawbytes v0.1.0
 	github.com/knadh/koanf/v2 v2.0.1
 	github.com/knadh/paginator v1.0.1
-	github.com/knadh/smtppool v1.1.0
+	github.com/knadh/smtppool v1.2.1
 	github.com/knadh/stuffbin v1.1.0
 	github.com/labstack/echo/v4 v4.11.4
 	github.com/lib/pq v1.10.9

go.sum

@@ -78,8 +78,8 @@ github.com/knadh/koanf/v2 v2.0.1 h1:1dYGITt1I23x8cfx8ZnldtezdyaZtfAuRtIFOiRzK7g=
 github.com/knadh/koanf/v2 v2.0.1/go.mod h1:ZeiIlIDXTE7w1lMT6UVcNiRAS2/rCeLn/GdLNvY1Dus=
 github.com/knadh/paginator v1.0.1 h1:mzbhjx167qRpvv9ym7BBaaNa1//qXU2YKk7mTmSmW9o=
 github.com/knadh/paginator v1.0.1/go.mod h1:NDzJofYUQiHbDrWukKRi3E2vIKb0dzOZKY8VmxbM2Sk=
-github.com/knadh/smtppool v1.1.0 h1:J7RB3PpNQW/STnJ6JXlNZLfuNsgJu2VILV+CHWnc/j8=
-github.com/knadh/smtppool v1.1.0/go.mod h1:3DJHouXAgPDBz0kC50HukOsdapYSwIEfJGwuip46oCA=
+github.com/knadh/smtppool v1.2.1 h1:zwSlICBrNc5XajC04Q5l5FaTz17S3tJOQ4c46fT3TjI=
+github.com/knadh/smtppool v1.2.1/go.mod h1:3DJHouXAgPDBz0kC50HukOsdapYSwIEfJGwuip46oCA=
 github.com/knadh/stuffbin v1.1.0 h1:f5S5BHzZALjuJEgTIOMC9NidEnBJM7Ze6Lu1GHR/lwU=
 github.com/knadh/stuffbin v1.1.0/go.mod h1:yVCFaWaKPubSNibBsTAJ939q2ABHudJQxRWZWV5yh+4=
 github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=